Day 2:  Social Bookmarking:  Installed the Diigo toolbar and added my Diigo user info to the class list.  Couldn't figure out the tag process and thus couldn't share any.  Your PLN:  Joined Library 2.0 and TeacherLibrarianNing.  RSS:  Subscribed to Google Reader and transported Unquiet Librarian and Neverendingsearch Blog to my blog through Reader.  Scoop.It:  Joined Scoop.It as a bird rehabilitator.  Twitter:  Had joined Twitter, followed folks, need to read "getting started" in greater detail.  Facebook:  Will join Facebook presently.  Flickr:  Joined Flickr.  Book Communities:  Subscribed to Librarything.  Really wanted Web Junction also but there was a login problem.  Enjoyed all the videos.  Wish I could go further than start-up with all of these but I will need some time to explore.