Technorati probably provides the most unreliable API interface I have ever worked with.
How to add a new feed handler to Firefox 2.0 without tweaking the registry.
A tutorial to integrate coComment tracking code into a Movable Type blog.
FeedBurner Stats 2 Feed is an easy tool to convert your FeedBurner statistics into a feed.
RMail module allow users to improve their Google homepages adding a small dashboard containing a list of RMail features including subscription box.