Last July, a new product from Google named Knol similar to Wikipedia was launched, a social content sharing network. The criteria for articles and to be an editor is more tougher than in Wikipedia but you can expect great content. You can also earn online in Knol for you can put Adsense on the articles posted, similar to how you do it with blogspot. The more traffic your article generates the more possibility of earning through clicks on ads. Knol has already gotten alot of backlinks, new and likely to be a hit.