Readable Feeds can filter out ads and other junk from your feeds so that you can concentrate on the content. It can even repair crippled feeds that only show small excerpts instead of the full content, saving you the time and hassle of leaving your feed reader.
a new service which makes it easy to extract content from any website
wordpress plugin to show a rss-feed on your wp-blog
RSSHub is a lightweight and extensible RSS feed aggregator, it's able to generate feeds from pretty much everything.