I have been struggling to determine where to focus my energy across all of the social media applications available. I have categorized them as follows: Content Aggregators, Social Media Aggregators, Micro Blog, Bookmarks, Community: Visual Media, Community, Community: Business and Discovery. There are a few others like Community: Software - Wakoopa, Community: Books - Shelfari and Marketplace - Kiva.

In each bubble, the participating applications are in order of type size. The clear winner is at the bottom of each bubble in the largest type. I used a combination of PageRank and People Count to determine the order (see attached spreadsheet - Download social_media_matrix.xls)

Until now, I have been registering and participating in all of these applications. After doing this exercise, I am going to reduce my participation to one or two from each category.