Add an "About Me" widget to your sidebar.
This widget will show general information about you.
Add your email and small description, and your gravatar will be shown next to the summary. You can also show icons (URLs) of your social network accounts.
Currently, the following social networks are supported:
You can even add your Feedburner ID, and the plugin will show the number of subscribers, next to a standard Feedburner image.
For more information please visit the home of the About Me 3000 plugin