To update everyone, we've tidied up the Google Reader extensions, so there are no longer two separate downloads depending on whether you're using Firefox 2 or 3. The extension also works with Greasemonkey.
The latest version of the extension supports both versions of the browser, and is available via the main Google Reader extension page: http://gr.aiderss.com/
The separate beta extension page with the zip file download is no longer necessary.
I've had AideRSS in my Starred Items for a couple of weeks now. I've been thinking it over, because I really am a thorough person... I like to read all the posts in most of my feeds. But I was starting to feel overwhelmed by a few feeds... I found myself "marking all as read" for them, but I didn't want to unsubscribe completely because I do like them. I just started using AideRSS tonight and it's great! I'm not so overwhelmed anymore and I still get to enjoy the feeds. Thanks!!