Berry Bloglines is a web service optimized for reading RSS news feeds and blogs on web-enabled mobile devices such as the Blackberry. It builds on the Bloglines service you can access from your PC.
Though other mobile RSS readers exist, Mobile Bloglines has the advantages of being totally free, requiring no softare installation, and of letting you do all of your subscription management on the PC. Also, when you read a message on your Blackbery, it will show up as read on the PC, and vice versa.
Learn more here: http://www.thebogles.com/berry_bloglines.html