Delicious

The tag cloud would be useful in helping a patron narrow down and locate items that they are looking for. As far as Delicious goes, I think it is a unique way to share information with other people who have the same interests as you.

my space and facebook

From what I can see my space seems to be a combination of social and library information.
Facebook seemed to be more structured and gave more information lconcerning library services and programs. Facebook and My Space would be useful to patrons and outside library connections, moreso, for people who do not visit our library frequently.

twitter

It was fun but a little confusing and could be helpful to some people.

blogger

It kept rejecting my password which was a little frustrating but eventually took it.