I’m a fan of the Daily WTF – not all of the posts are amusing, but enough of them are to keep me coming back. However, I detest the comic which the site carries – Mandatory Fun Day (MFD). Unfortunately the site only provides a single RSS feed, containing everything. In order to filter out MFD, I created a Yahoo Pipe to strip MFD related posts out of the feed and pass the rest of the RSS through. It can be found here.
Yahoo Pipes are a really nifty tool – you can do a lot more with them than merely filter out some content from an RSS feed, but this works for me quite nicely.