tonight on "nightline," porn star next door. the young man that your teenage girl may be secretly watching. but he's no justin bieber. that baby face belongs to one of the porn industry's biggest stars. tonight, a sex symbol for the facebook generation. gambling frenzy. on this super bowl weekend, las vegas becomes the biggest and glitziest party on the planet. fans bet almost $100 million on the game. but who loses? who really wins? and shattered voices. the big sounds of adele, "rolling in the deep." john mayer, and ooet urban. why are so many superstar singers needing vocal surgery?

how a new business reality might be hurting the talent. >> announcer: from the global resources of abc news, with terry moran, cynthia mcfadden and bill weir in new york city, this is "nightline." february 2nd, 2012. good evening. i'm terry moran. there are an estimated 370 million pornographic websites on the internet. and for any parent concerned about what their teen does online, the huge popularity of the young man you're about to meet may be deeply disturbing. his name is james deen. that's two "es," an he has an avid fan base of teenage girls. james deen isn't his real name. it's his porn game. here's abc's cecilia vega for our series, "modern sex in

america." >> i think it's fantastic. >> just a ridiculous amount of love for him. >> james deen's like a guy you can meet in your neighborhood. and just get to know. >> reporter: these young women could be gushing about any number of heartthrobs hanging from their bedroom walls. ryan gosling, justin bieber, justin timberlake. but they're not talking about a mainstream hollywood crush. they're talking about james deen, a porn star. >> he's the ryan gosling of porn. >> reporter: the american porn industry, by some estimates, a $13 billion business, has now targeted and reached a new demographic, teenage girls. evidence of that? deen has become something of an internet sensation. fans much younger than 18. a fact that many parents might find disturbing. you have this massive following of young women, some of them teenagers.

what do you say to that? >> there's a 15-year-old girl, an underaged guy, an underaged guy that's sees a scene i'm in. they're curious. they're horny, whatever it is. they're sexual enough that it's something they desire, that they crave, that they want. and it's not necessarily a bad thing. >> reporter: parents might not think so. >> why? everyone has sex. if your daughter's 15 or 18, you know, at some point, she's going to have sex with somebody. >> reporter: so normal, he kind of looks like he doesn't belong in a world where macho is king and bigger is best. but that's exactly what the ladies, especially the young ladies, love him for. >> he looks like somebody that i could see at, you know, a coffee shop or something and actually approach. >> reporter: christina is one of deen's biggest fans. >> that's the picture that i like, i'll reblog it. >> reporter: she's in college

now. but says she has been a fan of deen since high school. watching porn since she was around 10. >> the first encounter with porn was in fourth grade. and i searched "playboy." it was early adolescence. that's a very curious stage. >> reporter: she is not alone. there are literally thousands of women out there who share christina's enthusiasm for all things james deen. >> i'm going west. >> reporter: many of them are barely legal. some of them so young, we couldn't even interview them on camera. their parents have no idea that secretly, they have a crush on a porn star. it's a phenomenon that not even the man at the center of it fully understands. but it's one that he fully defends. are you encouraging them in any way to watch your films or read your blog or keep the interaction going? >> i'm not intentionally encouraging anybody in anyway. if it's happening, awesome. i have no -- i have no issues with a 15-year-old, 16-year-old,

17-year-old girl reading my twitter. i have no issues with anybody that is old enough to understand. i knew what porn was and everything when i was 6 years old. and i don't think that having knowledge of what it was led me to my decision to be in porn. >> reporter: and deen, like countless other young people his age, maintains a blog and twitter account. we can't show you much of what he posts. but what fans, old or young, see, ranging from the graphic scenes from his movies and photos of his well-endowed co-stars, to the toast he ate for breakfast or the burrito he wants for lunch. and if the visitors to his site are under age, deen says that's not something he can control. >> i understand that they're minors. and i'm not saying that they should be viewing porn. i'm not saying that. and i'm not encouraging underage kids to go to my blog. in fact, i don't think they should. the law says, if you are under 18, you can't view porn. >> reporter: but on the other hand, you're saying maybe they'll get something out of

this. >> i hope i'm opening up their sexual experience. and they're able to take their boyfriends and say, i saw this in a porno, and we should try this. i don't think porn should be a learning guide. >> reporter: and believe it or not, james says he knew he wanted to be a porn star, ever since the day he found an old porn magazine. he was only in kindergarten. >> i was in kindergarten. i just learned what sex was. and it made sense. >> reporter: wait. at kindergarten, porn? you're not telling me you wanted to get into porn at kindergarten? >> yeah. >> reporter: you did? >> maybe first grade. this is what i want to be when i grow up. i want to do this. >> reporter: deen was even suspended once, for telling a teacher he dreamed of a life in porn. now, he's starred in more than 4,000 movies. the young fans tell us they're drawn to deen because he's different. a porn star who holds hands with his leading ladies. who gazes into their eyes. even shows a little romance. and for the kids watching all of

that, deen doesn't want to hear directly from them. >> i'll have a couple of times that somebody will say something to me. i'll respond, via direct message. and i'll get something like, great, when i turn 16 -- oh, wow. i have to be careful of that. >> reporter: he has surprising advice for those teen fans. >> turn 18 and buy porn. >> reporter: for "nightline," cecilia vega, abc news, los angeles. >> makes justin bieber look good there. thanks to cecilia vega for that. just ahead, the wild super bowl action. turning an entire city into a game day gambler's nirvana.

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with terry moran. las vegas. it's a town known for outrageous parties. the super bowl is a game known for driving fans crazy. bring the two together and mix in nearly $100 million in high-stakes game-day wagers, and you have a recipe for a weekend that defies the ability of language to describe it. luckily, abc's david wright has a picture of the odds and the action. ♪ >> reporter: 70,000 fans will be at lucas oil stadium, to watch the afc champions play the nfc champions. but four-times to five-times that many will watch the game in this gaudy neon oasis in the nevada desert. who do you think will have more fun? >> where do you want to be february 5th? indianapolis? or las vegas? >> reporter: most people would not have very much of a struggle with that. no offense to indianapolis. >> i agree with you 100%.

we turn all the lights on. everybody has a party. >> reporter: an super bowl weekend, vegas becomes the biggest and glitziest man cave on the planet. >> like a modern man cave. >> reporter: sure, you could go to delaware,he only other state where betting on football is legal. but come on. vegas is the sports betting capital. >> people have said, jimmy, what's the difference if i watch the game or had the ticket for odds. buy a ticket and watch the game. all of a sudden, you're going to watch it like you never have watched it before. >> reporter: he may be the most influential bookie in vegas. setting the odds on sports for more than 30 years. and it's still the main sports. football, baseball, basketball? >> football is the king. >> reporter: making the super bowl from a better's perspective, the single biggest sporting event of the year. >> i'll give you an analogy, i don't bet horse racing.

but i bet the kentucky derby, one day a year because it's the kentucky derby. >> reporter: as much as $93 million wagered on one game. a total they're hoping to beat this year. >> we know it's not been good going on the past few years. people find money to bet on football. >> reporter: for every dollar they spend on gambling, they spend at least as much on everything else. >> they'll go to the nightclubs. they'll get a table. they'll go to v.i.p. parties. a great night for the hotel. we'll be sold out. >> reporter: lisa, the chief of marketing at the cosmopolitan says for casual betters, football is a lot less intimidating than some of the other casino games. on football, you know the game. you've got your team. you know where to put your money. >> that's true. but then, they have those great ancillary bets, right? who's going to get the first touchdown? who is going to get the most yardage. those are the bets i fall for. >> reporter: will chad au cho

cinco score a touchdown? will the patriots score more points than lebron james does for the miami heat sunday? it's all more art than science. the propositions and the points spread, all decided by the bookmakers. >> it's the decision. 2 1/2, or 3. >> reporter: that's a huge pressure on you. >> you're pulling the cash out of your pocket. i think i'm a little smarter than you. at times. >> reporter: at times, he has gotten it wrong. the biggest losing proposition of his career? back in the days of the super bowl shuffle. >> you're looking at the fridge ♪ ♪ i my be loved but i'm no dumb cookie ♪ >> reporter: super bowl xx, the bears versus the patriots. >> i can see refrigerator perry crossing the goal line in the '84 super bowl. we paid dearly. i can still feel that sting 26 years later. >> reporter: every other casino game comes down to strict,

mathematical probability. how likely are you to roll a 7? or make blackjack? or have that little ball land on your lucky number. with sports, it's all up to the bookies. the pressure's on you. >> there's a little there, yes. >> reporter: johnny avello, chef bookmaker at wynn, says the wild card is the giants. earlier this season, the oddsmaccers put them at winning the super bowl, 100-1. >> you're seeing 100-1, at $200, that's going to win $20,000. >> reporter: how many do you have that? >> there's quite a few out there. >> reporter: is it a chance it will break the bank? >> no. it will not break the bank. >> reporter: win or lose, there's no better place to watch the super bowl. >> this is an ideal location to watch the super bowl. we're on the 50 yard line of the bellagio fountains. >> reporter: nightclubs are sports bar for a day.

the deejay booth replaced by flat-screen tvs. even the refreshments are exotic. will it go well with nachos? i'm david wright, for "nightline," in vegas. go, new england. >> our thanks to david wright for that. watch "good morning america's" coverage tomorrow live from indianapolis. "gma's" super bowl blowout, including an interview of tim tebow. we'll have more with tim tebow, in an interview with hannah storm on espn, tomorrow on "nightline." next up, "rolling with the deep." it takes a big voice. why are adele and so many other star singers needing invasive vocal surgery? [ sponge ] season's new? hands that feel soft and silky smooth! ooh...she's got the look. what's her secret? the gloves? dawn? i don't believe it. [ male announcer ] it's a dishwashing sensation... dawn hand renewal

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keeping instruments in top repair is a top priority. but what about those stars whose main instrument is their voice? a truly startling number of today's best singers have had to undergo surgery on their vocal cords, raising the question of what exactly is broken here? here's abc's chris connelly. >> reporter: what could possibly be wrong? ♪ rolling in the deep >> reporter: with singing like this? that voice has made adele a favorite to sweep the grammys. but weeks after this september concert at albert hall, the 23-year-old singer/song writer had surgery to repair her vocal cords and save her career. she's not the only superstar to go under the knife lately. 34-year-old heartbreak warfare singer, john mayer. and put you in a song singer,

keith urban. both getting treatment. what has happened to the vocal cords of today's singers? >> i'm going to show you like what adele or another singer who has what's called a hemorrhagic polyp. >> reporter: polyp, nodules, even hemorrhaging. according to dr. nasseri, damage like this shuts down an a-list voice. >> the cords are meeting. this person had no voice. >> reporter: what's that like for a singer? >> it's devastating. >> reporter: poor vocal technique and lack of rest can be culprits. because of the new realities of the music business because of touring. >> to not do any rest. not staying up tweeting about it and be famous. >> reporter: as seen in the film

"never say never," justin bieber brought in voice coach jan smith to help him monitor his demanding schedule. >> voice sounded good. >> hear how your voice sounds now? he's giving it everything he's got. but doing 86 shows is a lot to ask. >> reporter: as for the damage done, dr. nasseri says doing minimally invasive surgery, like adele had done, heals the vocal chords with little risk. but it's a last resort. thanks to the cautionary tale of julie andrews. her singing voice was damaged after surgery in 1997. but it's never too late to look after your voice. as savvy superstars have learned. paul, congratulations on all that rock 'n' roll has brought you here. >> rock 'n' roll has been good to me. but i've done my time. >> reporter: after more than four decades on the road, paul stanley of kiss has performed thousands of shows.

but all those high notes took their toll. >> as soon as you take the stage, you're a complete idiot because all those people are cheering for you. if you don't give yourself time to recuperate, it catches up with you. >> reporter: he had surgery on his vocal cords, by noted dr. steven zietell. what did he tell you? >> he said my vocal cords looked great for someone who worked as much as i did. >> reporter: good news for a rock 'n' roll veteran, recording and producing a new kiss cd. >> i lead a pretty good life. that whole cartoon lifestyle, is your demise. >> reporter: even adele, yet to go rolling in the deep once more since the surgery, may have gotten the news. >> i have my hot honey. it's fantastic. >> reporter: i'm chris connelly, for "nightline," in los angeles. >> sing on, adele. thank you for watching abc