inside the dark ♪ ♪ it's right under your nose semicolon mouth ♪ ♪ so sorry >> what is that? >> these are actually not examples of semicolons. >> what? what? >> yeah. most of them are colons. so technically, gra matcally incorrect. >> huh. >> so you're correcting our grammar? >> yeah. >> okay, well i've got to say alanis coming from you, that's a little ironic. [ cheers and applause ] >> [ muted ] you. ♪ it's like rain on your wedding day ♪ ♪ it's like advice that you just didn't take ♪ ♪ and who would have thought it

figures ♪ >> so we just want to say with the four of us on this stage, to all the grammarians out there, eat it [ bleep ]. get out of there, buddy. >> thank you. [ cheers and applause ] >> jimmy: lonely island. their cd "the whack album" comes out june 11th. thanks to jonah hill. thanks to arvind. i am the true spelling champion. apologies to matt damon, we ran out of time for him. thank you for watching. "nightline" is next. good night.

>> tonight, on "nightline," galloping on top a and risking life and limb for the type of thrill that only comes down the stretch.ñi know before you go, with only a hundred million travellers and visitors, trip.com is the destination for travellers, we met the guru who started it all. and the most amazing trailer, why diana may be the most highly anticipated entertainment event of the year. keep it right here, america,

from new york city, this is "nightline" with bill weir. boxers, horses, they tempt the force with speed, but how about a little respect for a jockey? many don't realize that it leads to a surprising incident of being paralyzed. who would sign up for such a thing? the kind that attempt the only jockey school in america. and abc's juju chang went to meet them. >> reporter: it is a rare sight, a bright, pink flying helmet,

the young woman underneath the rim grew up with her heart set on this. a shot as a professional jockey in the death-defying world of the thoroughbreds. >> i just love riding. >> reporter: here in lexington, kentucky, where horses and had hooves are plenty, jessica reill goes to the north american racing academy. she has almost completed the two-year course after paying $27,000 in total tuition. the students here will spend a few hundred an hour riding a horse, and learning the skills required. the freshman class has 12 aspiring jockeys, 11 of them women, defying the odds, roughly 10% of the jockeys in the u.s. are female, and only 2 are

women. but these young ladies are ready to man up. no princesses? >> no princesses, you have to be one of the guys. >> reporter: if you believe the odds they will be lucky if any of them make it to the big time. but first, they have to edge out marissa yetter, who knows it is a tough sport. >> you have to be able to go into any situation, but be able to say hey, i'm the best, i can kick your butts. it is a mental kind of personality. >> reporter: i'm going to beat you? >> yes, it was first like the hunger games. >> reporter: though her competition is veteran riders, there is one person here who has the audacity to be a novice. chase roberts is ready to stand against his classmates as a lone stallion. >> i saw that some of them were

pretty good at riding, i thought they knew what they were doing, and i didn't. >> reporter: so he was accepted into the elite riding group. and this is his first time ever on a horse. >> don't get your feet back behind the saddle. >> reporter: but no riding experience can be a leg up here. because you don't have to break bad habits. it requires the techniques. >> chase is coming along very, very well. he had no riding experience before coming here. >> reporter: but that is not necessarily a disadvantage in your book? >> no, it is not, because i never touched a horse until i was riding 16 and was riding professional when i was 19. >> reporter: chris mccarron is one of the most winning jockeys, and the founder of the school. what makes a great jockey? >> it is the ability to stay out of the horse's way, to a great degree. >> reporter: staying out of the

horse's way so much that it barely feels you on its back. >> the horse is not going to be able to perform at the best peak if it is carrying 100 pounds. >> reporter: so the size is considered more important than the riding experience, you better weigh under 112 pounds. body expectations are far more rigid than more athletes, and on par with the lowest fat rates to even survive. >> the typical male jockey has the fat range that ranges between 3 and 7. >> reporter: oh, my gosh! >> yeah, and the girls are between 8 and 12. >> reporter: that is incredible. compare that to average body fat percentages, around 25% for women, 18% for men. vanessa is a gifted, slim rider, but still struggles. >> well, i stopped eating so much chocolate. >> reporter: no more chocolate? >> no, no more chocolate, and

trying not to go over 1500 calories a day. >> reporter: it is pressure like this that can be dangerous. >> some jockeys will even go to the extent of eating and immediately throwing up right after. they order a $20 steak, and ten minutes later they go in the bathroom and throw it up. they call it flipping. >> reporter: flipping, in this world, it is a common behavior. >> unfortunately it is prevalent in this field. hitting the sweat box, we call it, pulling weight through perspiring. it is challenging. >> reporter: they will risk their health and even their lives. >> since 1948, two or more jockeys were paralyzed, it is much more dangerous than car racing or gliding. >> reporter: it is a very dangerous sport. >> i think if you talked to any insurance provider, they would

agree. >> reporter: according to the reports, there are multiple accidents, what about the dangers, do you ever worry? >> i don't, my mom does. >> reporter: spoken like a true mother. >> i fell off a horse and had a bad concussion last summer, and you get back on the horse, you don't let it phase you. >> reporter: when we visited the school the first month after chase's ride, we found him on the sidelines, he had had a nasty fall and injured his knee. >> no, i didn't want to get off, i wanted to be on the horse that knocked me off. i thought i was going to be on him today. >> reporter: there is a burning desire, but their chances of making millions are slim. jockeys get 10% of the earnings, but only if they win. >> that doesn't really cross my mind. honestly, i would be happy sitting on a plot of land in a nice little trailer, and having horses around me.

riding on the tractor, i would be totally content with that. >> reporter: the north american racing academy has a horseman's path way program, too, for students aiming to be groomed, exercising, or ideally, the trainers. >> you get them strong, inside their hoofs, you have to clean it out. >> reporter: no matter their position, everybody does barn work, along with classes and exams. but they're all here for different reasons. >> i don't know if i should admit this, i still don't love horses, the riding, the speed is what i love, where i get my blood worked up. >> reporter: for some, it is adrenalin, for others, money, for most, nothing more than the simple love of horses. >> when you're on the horse, they're running for you, you can feel it and they love it. >> reporter: for "nightline," i'm juju chang. and interesting world, for more on north american academy, you can head to abc.com, coming

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gather around, kids, and let me tell you about the olden days back when you had to put on pants and leave the house to buy music. and you had to have something called a travel agent to steer you away from bed bugs and

hookers. and then came the internet, and then suddenly, people were not just swapping music but travel advice, and the vacation industry has never been the same. from tripadviser.com, they help to understand why and how, "nightline" welcomes lindsey janice. >> reporter: danielle forte is a self-described travel junky. in recent years, the mother of two has become obsessed with taking family vacations, and on every single one, tripadviser has become her navigator in chief. she has looked at jamaica resorts and follows the site's advice, and tosses out the glowing and the gross, to find opinions she can trust. >> actually, here i found reviews that were good, some

were not good, these seemed like they were good for a family with older and younger children. >> reporter: in the end, danielle decides perfect marks are not the most important. and her son, jared, had just one request. a lazy river. >> there is a walk around the lazy river, very crowded. lots of people having fun. how do you like it? >> good. >> reporter: to find out how tripadviser grew from a small idea to a public company worth more than $9 billion, we took a trip to boston, the website's hometown. the first stop? hotel commonwealth, rated number one by the tripadvisers, meaning it beat out other hotels, the closeness to fenway park and the view. the site is so important to their business, the managers of this hotel monitor tripadviser daily, even rewarding and coaching employees based on the reviews. >> the employees are allowed to

use tripadviser as their main tool to gauge the guest experience. >> reporter: next, we stop at the top-rated restaurant on the site which claims to have the world number one sandwiches? >> i think they really made it famous, i just think you know, we might have made it a little bit different. >> reporter: this family-run business has exploded in popularity, doubling their business in recent years, thanks in large part, they say, to reviews on tripadviser. >> somebody mentioned that if they were on death row, the sandwich would be their last meal. >> reporter: rob says despite being tucked away in the city's financial district, tourists from all over the world are biting in big. >> imagine going to london. >> reporter: finally, we visited the place generating all the customers, the nerve center of trip adviser, and met the co-founder who became an internet pioneer by making a business out of user-generated

content. >> tripadviser has all the information, where all of your friends have been. >> reporter: the site only offered professional travel reviews. but something unexpected happened. >> when we put the writer review button, people started to click on it. and then we watched what the next set of visitors did, and they skipped the professional reviews and went straight to the real opinions. and we think it because the opinions were actually written last week, or month, not published a year or two or three ago in some guide book or newspaper somewhere. >> reporter: tripadviser recently celebrated it 200 millionth reader review. the company made billions in sales, mostly by charging a small fee per click on hotel websites where it sends traffic. but with this phenomenal growth comes critics, who points out the site doesn't verify the users have actually been to the

site they post about. >> are you transparent with your users about the frequency of people trying to gain use of the system? >> it doesn't happen that much, we don't have a good way of sharing with our viewers, we have the ability to drop a hotel in the ranking if we think they are manipulating the accuracy of the reviews. >> reporter: now they want to make it a one-stop shop destination, where people shop for the best. >> if a vacation rental is better, have at it. there are hundreds of thousands to choose from. >> reporter: so travellers like danielle can spend less time surfing the web, and more time surfing that lazy river. >> and out. >> reporter: time for danielle to take the trip adviser experience full circle with a review of her own. >> end of our vacation. >> reporter: and she is giving the resort a four out of five

rating, which also happens to be the average score on the site. >> what do you say here? >> that everything was good, there was always food and drinks available, and doing everything possible to ensure the experience. the grounds were nice, the slides were great. and the only side note was the stairs leading up to the side. they were -- >> yeah, definitely needed a paint job and definitely needs a little work, and it was a little slippery actually, too. >> reporter: for "nightline," in boston. thank you, lindsey, who could possibly play princess diana believably on the big screen? we'll see the trailer that has fans aflutter.

[old english accent] i doth declare that thou have brought overmany discounts to thine customers! [old english accent] safe driver, multi-car, paid in full -- a most fulsome bounty indeed, lord jamie. thou cometh and we thy saveth! what are you doing? we doth offer so many discounts, we have some to spare. oh, you have any of those homeowners discounts? here we go. thank you. he took my shield, my lady. these are troubling times in the kingdom. more discounts than we knoweth what to do with. now that's progressive. ♪ even superheroes need superheroes,

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. and finally tonight, the controversial decision that may have saved a little girl's life. a bicycle takes flight, and two át the kind of roles that could drown them in jeers if they're not careful. they're three of the most sticky stories, and all on tonight's edition of "feed frenzy." among the worst words any parent can ever hear is your child needs an organ transplant. especially if that child is young. because only patients over 12 get to join the most urgent donor list. but when the parents of

10-year-old sarah murnahan learned their little girl needed a transplant, they didn't give up. they went to a judge to force the change in the rule, and today, little sarah got her new lungs. even before george jetson dropped elroy off at school, we were waiting for our flying cars, but while we're waiting, three czech companies created a flying bicycle, carrying a dummy, the 209-pound propertoty successfully took off inside of the prague testing facility. leorando da vinci may be proud to know that we may be on the edge of personal flight. and the buzz of the new trailer

today, without a word of dialogue. shows how naomi watts has been transformed into the late and beloved royal, for the upcoming film, "diana" to be later this year. and here is a look at rob lowe as president john kennedy, in the film, "killing kennedy." even though he is older than the man he is going to play, looks like the makeup department had to add a few wrinkles to the perfect face. and time for closing arguments, edward snowden's face has been all over every news agency after he allegedly leaked secrets. today, hong kong divulges new information, claiming the hacks since 2009. while snowden's latest assert n assertions are