A few bit.ly users who also heavily use Delicious and Twitter have asked for an easier way to sync all these services. We recently came up with a pretty good way to automate this sync process using Twitterfeed.
By filtering your results by popularity, you'll be able to pare down a bunch of results that are presumably all relevant into the top sites on your topic, or some surprising ones you might not have heard of.
Love Digg's RSS feed but don't have time to keep up with it all? Disstill is like your regular Digg RSS feed but filters out stories below the minimum diggs that you set.
A serialized feed is one in which posts are arranged in a linear order and where subscribers always begin with the first post, no matter when they subscribe to the feed. This contrasts with an ordinary RSS feed, in which a subscriber will begin with today's post, no matter when the feed started.
The ticTOCs Journal Tables of Contents service makes it easy for academics, researchers, students and anyone else to keep up-to-date with newly published scholarly material by enabling them to find, display, store, combine and reuse thousands of journal tables of contents from multiple publishers.