I've been participating over at Mixx this month and even sumitted a few of the social media magazine stories.
Mixx really is the most comfortable sharing and discovery site I've used in teh past year. Just think of it as Digg with the nasty people.
Give it a shot if you have 2 minutes to setup an account. There are also many great social media submissions and experts on Mixx. Wouldn't it be nice to have a few of them participating here with social media tips and articles.