Mash-ups
Some of the mashups seemed completely useless, or at least for my lifestyle.
I did find one I found interesting http://lazylibrary.com/ — which lets you look for books that are 200 pages or less. This could be great in a Public Library – where you get asked all the time for school assignments for books that are 100+ pages, but not more then 200 pages.
I looked up the privacy stuff – and because I read Shifted Librarian, Krafty Librarian, AL and the others – I didn’t really find much new to me on the topic – but I can see how this might be useful if you are trying to brush up on a topic, or what to see what other Librarians are doing.