I’m somewhat late here, but these are worth reading if you missed them…
Meredith Farkas links to a couple of interesting posts on libraries in social networks, by Kate Sheehan and Andrea Mercado: both argue that librarians often don’t understand the cultural context of social networks, even if they understand the technology.
Also via Librarian In Black, Trailfire, basically a tool for people to create pathfinders to websites on a particular topic.
Michaels Casey and Stephens on how a transparent library should cope with anonymous online criticism.
Micheal Stephens links to a Read/Write Web article on 10 common objections to social media – with answers.
The Google Generation may not be so good at Googling, after all (via LibraryStuff). Some food for thought here for libraries (the article discusses a report (PDF) sponsored by the British Library and JISC).