Twylah.com gathers your Hashtags in conversations and displays your internet activity by category;
Have a peek Mine is http://twylah.com/davidpylyp
Then it asks if you would like to follow this person!

The really great other thing I have found is the About.me profile that is related to your KLOUT scoring. Add a jPEG then post text over to display all the sites where you can be found.

Both are free and useful to help promote you!
UMM free!