I've been finding LinkedIn to be more and more helpful to my business career over the past few months. The email updates and articles they put in front of me via email as well on the web site have been consistently topical, insightful and in some cases quite actionable.
I have also joined a series of groups, many of which have their own forums. While my backlog of business books grows, I do manage to find time to intake these snippets of information. Just yesterday, I stumbled across the Harvard Business Review forum which had an interesting discussion on how to handle a "bad boss." While the discussion was started months ago, these types of discussions aren't particularly time sensitive - they are still worth a read. Clearly, there are many detail-oriented folks in the forums as the discussion was quite rich with many "It depends" type answers (which tend to be the most insightful and helpful.)
The most interesting contributions probably came from Dr. Brian Monger.