Social media and marketing

So you are on facebook and/or MySpace, you linkedin, twitt, blog, maybe also Qik and probably been Wiki once or thrice... but what for? Here is an interesting article on Knowledge@Wharton about why we should care to market ourselves through social medias. Or check out a Guerilla marketing class on Edufire.com.

Today I have discovered Knol @Google and I must say I'm dumbfounded. If you see how it is different from, and an improvement on, Wikipedia and Blogger, give me a holler. I'm lost. Must be age!