WebJunction is an amazing resource. Self described as an "online community for library staff", it has resources, training courses and a community of members that can interact in various ways, such as forums, discussion boards, wikis and blogs. On the home page today is an article describing exactly how libraries can use Twitter, the new micro-messaging tool. Also there are links to many great classes, all free.
Some information from the site, explaining who they are, and how they can do all this cool stuff for free (three words: Bill and Melinda):
WebJunction is a cooperative of library staff sharing and using online resources that enable us to identify and embrace appropriate technologies and apply them to our daily work.
To sustain this effort, we partner with library and cultural heritage organizations and those that support them in meeting their objectives through effective use of collaborative, web-based technologies.
In 2002, the Bill & Melinda Gates Foundation awarded OCLC Online Computer Library Center a three-year grant to build a portal for public libraries and other organizations that provide public access to information. Building on the Bill & Melinda Gates Foundation's five-year Library Program, which has provided over 40,000 computers with Internet access to more than 10,000 libraries across the United States and Canada, WebJunction was initially the work of five organizations, led by OCLC.
Headquartered in Dublin, Ohio, OCLC is a nonprofit organization that provides computer-based cataloging, reference, resource sharing, and preservation services to more than 56,000 libraries in 91 countries and territories across the world. For the initial grant, OCLC partners for the WebJunction project were:
The Colorado State Library: initial needs assessment and evaluation
The Benton Foundation: online community development
Isoph: online learning management
TechSoup: technology related content and community building