So what's been the return on the Web 2.0 investment boom?

After the previous round of the dot-com bubble in 2000, the internet industry was quiet for a while. Around 2004, the industry once again began to enthusiastically discuss Web 2.0, claiming it to be a new form of internet model. Through more interactions, more personalized designs, and integration of more information content, the industry aimed to regain attention, especially from venture capitalists (VCs)...