I took my time wading through the long list of award-nominated Web 2.0 sites. I've found a few 'treasures'. Farecast.com was one of my favorites. If you don't have a specific travel date, you can just look at the forecasted rates spanning over the next thirty days! Find a date and a cheap rate, book it and fly! Very convenient.
Realtravel.com was also a good travel site to look at.
Of course, I looked at more library-related sites under the online desktop sites. I imagine that these sites, 'Goowy.com', 'Desktoptwo.com' and 'EyeOs.org', can be used for work at the library.
I really love Librarything.com, zoho.com, googledocs.com!
http://farecast.com/