MarketingWonk reports on how social software has hit the mainstream, and in a big way:

Social networking is catching the attention of the investment community with Friendster having raised $13 million and LinkdIn having raised $4.7 million. Knight Ridder and The Washington Post hope to mirror the success of Craig's List and capitalize on the power of community to grow their classified advertising business.

[ Source: MarketingWonk: Major Publishers Step into Social Networking ]