Google Reader (intro) is an interesting and useful beast; it allows you to import OPML files (lists of XML feeds that you wish to monitor). Of course it is all AJAXy and uses Javascript.

It’s tied to your Google Mail (“gmail”) login, so you’ll need one of those. That used to be hard to do, but they give them away like candy now.

Normally I use NetNewsWire (sorry, Mac OS X only) for my feed list management, but sometimes I’m away from my laptop and this serves quite nicely. It’s also a free and easy way to see if a feed manager will work for you; it has a nice search feature that allows you to locate feeds that might be of interest to you.