Tried to use akregator... Hate that there is no filtering! Besides akregator often crashes (man, I have not read RSS for a while).
Something in browser like Google Reader?.. Hate browser things!..
Maybe Orangutan?.. A RSS monkey could fetch feeds and send to user:
Orangutan: 2 new articles which match your createria: ... You: Don't show feeds containing Windows next time... Orangutan: Got it!
What do you think?..