One of the funny things about librarianship, to me, is how much of our collective “hive mind” type of knowledge is wrapped up in mailing lists and their online archives. I still subscribe to at least four library-oriented mailing lists though in many cases I have a web-based option for following along as well. I’ve recently become aware of the “Best of PUBLIB” website which has a nice categorized interface to some of the best “strings of comments” that have shown up on PUBLIB. The other lists I read are Web4Lib which I read via the web and VTLIBRARIES and VLABOARD which, to be best of my knowledge, don’t even have public web archives.