I've been playing around with Flickr for a while now, and marveling at the sheer flexibility of it - particularly with the RSS feeds and arbitrary tags. I've also been a viewer of del.icio.us for some time, and recently set up my own social bookmark account there. I'm still in awe of how powerful such a simple idea can be.
On an RSS high, I decided to sign up to Last.FM / Audioscrobbler, and have been giggling madly at the power of it all. My poor taste in music is now available for all to see.
Paul pondered syndicating his audioscrobbler RSS feed into the sidebar of his blog. Sounded like a fun challenge to me. If you look at the bottom of user pages on Audioscrobbler, you'll see the tasty goodness that is an orange RDF button. So forthwith and without further ado, there's now a feed of the latest tracks I've listened to on the front page of my blog.
Because my site is not running dynamically, I have a cron job on the server which retrieves the latest RDF, passes it through xsltproc, and writes to a separate HTML file, which is then included in an iframe in the MovableType stylesheet. It seems to work.