The 22 Step Social Media Marketing Plan

This article by Mashable has a number of compelling and FREE to use social media ideas. What isn't free: The amount of time it takes to pour content into them and to be actively using all of them. Seriously, we need a shakedown on the number of social media outlets out there so that we can focus traffic into a few key ones.
The 22 Step Social Media Marketing Plan

The best tool mentioned in the article is this one: http://usernamecheck.com/. It allows you to check user name status across a number of top sites.