Make a badge for your site’s RSS feed, give one to your friends, share them around. The world needs more badges!
Here is a really quick example of what you can do with a little JavaScript and Yahoo! Pipes, I can feel the PHP draining from me. I don’t like that you have to put content in your page head element to make it work though as that really ruins the idea of a quick, pluggable badge for your site. It’s a start anyhow.