I was fooling around on the bookmarking site Delicious this morning and wondered if anyone else in here uses it, and if so, do you use its 'subscription' feature? You can enter tags you're interested in, so whenever anyone uses that tag, it'll show up in your 'subscriptions' bookmarks.
For example, I have 'public records' and 'narrative_nonfiction' tags. They provide a stream of (sometimes) interesting things that other people are bookmarking. Just thought I'd toss the idea out there.