has helped launch a number of i.p.o.s including google, apple and genentech, among others; and alistair barrnior technology reporter for "u.s.a. today." so alistair, let me start with you. what fueled today's demand? >> there are really two things: one is fundamentals of a company off into the future and the other-- which is probably more important today-- was the supply and demand of the stock. there wasn't a lot of stock available and there was a lot of demand from big institutional investors. >> sreenivasan: mr. hambrecht, who made money today. of the 230 million users i talked about i imagine very few got in a share at $26. >> i think you are right. the system of an i.p.o. that basically calls it a public offering, it really isn't. i mean, it was an offering to really select institutions and some clients of the underwriters. but the public at large just really didn't have any access to it at all. >> sreenivasan: also stair barr, where does twitter say it's going to make its money? >> well, right now it makes most of its money in the u.s., but most of its users, interestingly, are abroad.

. >> sreenivasan: alistair barr, i want to ask, how does it differ fundamentally from the other socials that exist today? or perhaps even the public ones? >> the main two comparisons are facebook and linked in and they're really on other ends of the spectrum. facebook is friends keeping in touch with friends and relatives and linked in is a professional net work where you keep in touch with people you work with. and twitter kind of fits into the middle and it has much more of a realtime news aspect to it. so it's basically about following your interests and basically keeping up with those interests in realtime. and that both has benefits and drawbacks as well. it means that from an advertising point of view big brands like coca-cola and things like that, they can get involved in realtime conversations with people and that's one of those things that separates it from a facebook. >> sreenivasan: alistair, it also seems young teenagers, for them twitter has jumped the shark. it's old news. they've moved on to other platforms is that the sign that perhaps the younger audience isn't going t