Scoble’s provocatively suggesting that Google should fear Facebook, Techmeme, and Mahalo. I think his key assumption is that these social media environments are resistant to spammy SEO tricks and therefore will do a better job of delivering relevancy over time than Google which will continue to be weighed down by junky content and spamming.
But … I think he’s wrong. Google could be deposed by a better search tool, but I don’t think that will come from any of these three. Techmeme is great and I think will gradually scale into a powerful blog tool, Facebook is already on it’s way to co-dominance (with myspace) as the social network of choice for many. I’m skeptical Mahalo will gain much traction. I have not been following it all that closely but Mahalo’s “top of mind” prominence seems to be more from Jason’s amazingly aggressive promotional efforts than from a natural rise in the ranks. But depose Google? Nope, not gonna happen from these players.