A little like this suggestion here:
but with logic.
This is probably a big request / idea and perhaps one you have had already, or even it's a feature I've not found yet(!)
Could the pop-up alerts to new messages be watched for those I click. The words in the ones I click be added to a db and after a pattern has begun to form, could Awasu keep for me, all feeds that conform to ones I would *usually* have opened, if I had been at my screen at the time. A sort of "While you were away" list. For example, I'm interested in Canada as I'm moving there, and pretty much all ballons that mention Canada that I see, I click - the db would have a relatively high frequency for the word "Canada" and hence future ballons with that word that I didn't click would be auto added to this "While you were away" list.
This would be a sort of smart, auto 'in box'. It is a partial step back towards an email client (shudder! lets not go there), but I am certain it would be a killer feature - I am SURE I must miss hundreds of alerts that I would be interested in.