Disclosure: I used to work for LinkedIn. I think there could be a first mover advantage in the social networking IPO space. In terms of Twitter, FB, LinkedIn,

Disclosure: I used to work for LinkedIn. I think there could be a first mover advantage in the social networking IPO space. In terms of Twitter, FB, LinkedIn, etc, there is not a lot of reputable data about what kind of revenue and profit levels can be generated from a big social networking site. If you're the first company in that space to file and IPO, then you might get more leeway from investors because they don't have anything else to compare to. If you're not the first, then you might be scrutinized more.