IMAP-like solution for RSS-feeds?

Use the free NetNewsWire. It's MUCH better than the mail rss reader and you can sync both computers online with their system. It's not quite like imap but it works fairly well. Alternatively, making all feeds "read" is a simple "select all" "command-k" kestroke away so you don't have to waste time reading things you've read already.

 

I use google reader because I can't always install applications just to read RSS feeds. It also has a decent phone interface, so wherever I am the reading I have done is synced.

 

+1 to this. In fact that is how I got to this thread. I have macrumors RSS feed in my "frequently read" section. Ya I am late to this thread, but it was the 4th of July weekend.

 

+2. I love being able to logon to Google reader from any computer and be able to quickly check my newsfeeds.

 

I can recommend not to use brief. It is very poor.