Learning 2.0 is definitely a learning curve! I had no idea about all of these things before I started. As a librarian,I think that the tools  available to people on the web  are  very important to keep abreast of  and that libraries definitely need to be able to provide the public with access to these tools. Personally I prefer the traditional set up of the library, but realise that we need to keep up with technology and be educated about blogs, wikis, etc.