I use PostRank (what used to be AideRSS) to sift through my piles of hundreds of RSS feeds. Basically some feeds are so high volume that I can say, "give me the top 30% most popular" only and just look at those. There are buckets like "good", "great", etc.<p>It does various things to determine the interesting-ness of a blog post.<p><a href="http://www.postrank.com/" rel="nofollow">http://www.postrank.com/</a>