Vivek Wadhwa doesn’t lack opinions-–and this makes him fun to watch in small pieces. Check out this recent video of him describing social commerce site GrouponIn his words, it’s a Ponzi scheme.

The interesting thing about the video is that, afterward when other experts were asked to comment on the “P” word, they all demurred. No one wanted to go down that road. This doesn’t make Wadhwa wrong. Guests on TV shows aren’t supposed to take middle-of-the-road stances.

But them’s fightin’ words.

Simon Says

By and large, Web 2.0 companies have much more sound business models and actual revenue streams, especially in comparison the vast majority of its 1990s counterparts. But an $8 billion valuation for LinkedIn? $70 billion for Facebook?

Anyone else think that this is a bit high? Haven’t we seen this show before?