Siftlinks is a service that monitors your friend stream on Twitter, pulls out the links and creates an RSS feed for you to peruse at your leisure.
Siftlinks constantly monitors your twitter feed for tweets that contain links and builds you an RSS feed that you can push into your RSS reader.
Siftlinks is free for the first 30 days. There's no Siftlinks lite, there's no pro version. You get 30 days to fully try out the service.
After 30 days it's just $25 per year.