I wrote a utility to get the RSS feeds of all of my Twitter friends.
The background is that I realized I've been following a lot of people on Twitter but not necessarily following their blogs. That's sad, especially considering that I'm still using RSS a lot these days. This tool solves the problem in just a few clicks. The best part is that most feed readers are fine with importing duplicate feeds, so you can periodically run this thing and reimport the list of feeds to stay up-to-date.
The one thing to watch out for is people who link to non-personal feeds like the wired.com homepage. Once you import all the feeds into your feed reader it's worth looking through the "Twitter friends" directory and removing those feeds that look noisy or suspicious.
All the code is on GitHub. Patches welcome. It'd probably be useful to have the same tool for Google+, Facebook, LinkedIn, etc.
Update 2015-09-12: I've turned off the live site. If you want to use this you'll need to deploy it yourself.