Another player in the free customizable feed space is now Yahoo, they offer a very cool and powerful search based feed service, but interestingly enough it's hard to find mention of it on the Yahoo domain.
You can get the details from Jeremy Z in his blog, but the cliff note solution is as follows:
Just replace the word SEARCH in the url above with your own desired term(s) and ta-da you have a fresh news feed.
Here is an example searching for 'Health':
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