The Ultimate Who-To-Follow Guide for Tweeting Librarians, Info Pros, and Educators by Ellyssa Kroski.
Lists thirty (30) librarian feeds, then thirty (30) tech feeds (bad list construction, the ones under publication continue the tech feed list), ten (10) feeds for book lovers and pointers to three other lists of feeds.
You may need several more Twitter accounts or a better reader than most of the ones I have seen. Rules, regexes and some ML would all be useful.
Not to mention outputting the captured tweets into a topic map for navigation.
PS: I first saw this on Force11.