I got credit for a great post on social commerce I didn’t write.
As for whether 2010 will be the year for social commerce, I’m not sure. I think 2009 really accelerated the social advertising trend. Some of my posts are here.
Social commerce still has a ways to go. I named this as a key e-commerce 2.0 trend back in 2006 and didn’t explicitly distinguish it from social advertising. I should have.