I am a big Facebook fan. I like the simplicity of the model; I admire the openness of the platform; and I think Mark Zuckerberg really grasped the natural tendency of humans to affiliate themselves in groups academic professional or social. However when I hear rumors of a $10-15 billion valuation I am immediately reminded of that old Groucho Marx pearl: "I refuse to be a member of any club that will have me."
Perhaps Groucho got it right. My own experience suggests he did. I abandoned Linked-in as soon as too many people joined trying to sell me things; I emigrated from MySpace when the site began bombarding me with ads. Will efforts to commercialize Facebook to recoup a $10+ billion valuation ruin the service? If yes there will be a long list of new momentarily exclusive clubs to take its place.
So with apologies to the mustachioed master I posit the Groucho 2.0 Rule: "I refuse to participate in any social networking service that seeks to capitalize on my membership."
Caveat emptor