There are so many sites to visit in the Web 2.0 awards list - even in the shortlist - that it is difficult to choose. There are many which we already know and have subscribed to, like flick'r, del.icio.us, technorati etc.
I have had a look at Biblio.com and I think this one would be good in a library because you can search for used and out-of-print books by author, by title, by keyword or ISBN and even by binding! There is Book Discussion, Book collecting, Textbooks, Rare books etc.
I also looked at Google Maps where I can trace and find streets and directions in little villages in Spain.
