A new service, GeekChart, show you where you share most of your social media stuff and you can also share the results with all of your friends.
GeekChart works by pulling data from 8 social media sources: your blog, Twitter, YouTube, Flickr, Digg, StumbleUpon, Delicious and Last.fm. Facebook is on list but not active yet but hopefully soon. You can also suggest other sites.
Once you provide GeekChart your usernames on these social networks, it will calculate your sharing preferences over the last 30 days to create a personalized chart of your sharing habits.