I have tried what seems like a million RSS aggregators and keep coming back to Bloglines. It has proven to be an efficient web based solution when I'm on my laptop (that I can also access from any computer when I'm away from home), but it is by far the best option I have come across for use on my mobile device (Cingular 8125). The content is formatted perfectly for reading on the small mobile browser screen and it loads extremely fast. I have hundreds of feeds in various categories in Bloglines, yet I can load updated feed content in a matter of seconds – far faster than when I log into my Google or Yahoo accounts on my mobile browser.