find plentyll soon of advertisements among their tweets. >> for more on the market reaction to twitter's ipo, let's speak to our business correspondent who was in new york. why are investors so keen on twitter when it has not even turned a profit yet? >> it is been in existence for seven years and has yet to make any money. what investors are really investing in is its potential for growth. they see a lot of opportunity when it comes to twitter and a lot of that comes from its potential in revenue with mobile advertising. it isms of advertising, on mobile devices where that really is growing a lot. twitter, about more than 70% of its users are on mobile phones. as we heard in the piece, we're going to be be seeing a few more adverts coming on to our mobile devices when we are using twitter. moneymaker,al big potential revenues for twitter. >> is it the profile of the that makes it potentially profitable? best comparison when you are talking about twitter is facebook. facebook also has that same sort of younger kind of demographic. it also has older users, which you also see. with twitter

find plentyll soon of advertisements among their tweets. >> for more on the market reaction to twitter's ipo, let's speak to our business correspondent who was in new york. why are investors so keen on twitter when it has not even turned a profit yet? >> it is been in existence for seven years and has yet to make any money. what investors are really investing in is its potential for growth. they see a lot of opportunity when it comes to twitter and a lot of that comes from its potential in revenue with mobile advertising. it isms of advertising, on mobile devices where that really is growing a lot. twitter, about more than 70% of its users are on mobile phones. as we heard in the piece, we're going to be be seeing a few more adverts coming on to our mobile devices when we are using twitter. moneymaker,al big potential revenues for twitter. >> is it the profile of the that makes it potentially profitable? best comparison when you are talking about twitter is facebook. facebook also has that same sort of younger kind of demographic. it also has older users, which you also see. with twitter