AcqWeb's "Hot Topics" section, http://www.library.vanderbilt.edu/law/acqs/lis_hot.html , has links relating to current controversies in library science.
American Libraries Online, http://www.ala.org/alonline/index.html , gives you the "News of the Week".
The Library Journal Digital, http://www.ljdigital.com/, provides library news and technology updates.
Library Juice, http://libr.org/Juice/ , is a news digest for librarians, library and information science students, and other interested people. It includes announcements, many web resources, calls for papers, and news affecting the library world. Much of the material has a social-responsibilities or intellectual freedom focus.
At LISNews.com , http://www.lisnews.com/ , each news story is linked to a message board for discussion and comments.
A good source for "alternative" news is the Minnesota Library Association Social Responsibilities Round Table (MSRRT) Newsletter, http://www.cs.unca.edu/~davidson/msrrt/ . Editor Chris Dodge, "The Street Librarian" http://www.geocities.com/SoHo/Cafe/7423/index.html , provides interesting updates on library staff unionizing, internet censorship, price gouging by vendors, etc.
What's Gnu? is a mostly weekly collection of announcements about people, resources, and events, http://www.sls.lib.il.us/reference/whatsnew.html . What's Gnu? is compiled by Laura Johnson, a Research Librarian at the Suburban Library System Reference Service, http://www.sls.lib.il.us/reference/index.html