Want to play with RSS feeds? Try xFruits, where, according to tech enthusiast Steve Rubel, you can “teach your feeds all kinds of new tricks.”

He’s not kidding around, either: you can create a PDF file from an RSS feed, send an OPML to your mobile, aggregate, and lots more. I played with it a little bit and was suitably impressed by all the options; it looks like they’re even adding the option to create RSS feeds for your desktop files soon.