Yelp.com is a crowd-sourced review site.
Yelp, that restaurant-review startup that everyone kinda sorta uses but that no one really feels all that passionate about (it's no Foursquare, it's just always, you know, there) staged a very successful IPO today, with its stock price rapidly rising well above the offer price of $15.
Sounds great, except of course that Yelp hasn't made any money since 2004 and has a business model that entails massive outlays on local ad sales staff to keep the cash coming in. At Business Insider, Henry Blodget is utterly appalled.
I'm surprised he didn't address the "low float" and IPO-underpricing questions (he has before, regarding LinkedIn's IPO). Yelp sold a little more than 7 million shares. I don't have the exact number, but if recent history is any indication, this is only about ten percent of the company.