More Tuesday lists

6 tips for finding the best airfare deals online

60+ virtual tours and webcams for social studies

10 grossest world records

5 green cleaning products the pros love

19 unintentionally terrifying children's album covers

8 hilariously failed attempts to use CGI in political ads

10 strange and wonderful soaps

5 comic book spinoffs that never should have happened

10 web sites with really cool inventions you don't know about

5 fun FarmVille accessories

Top 10 westerns (novels) of the decade (via Lit Lists)

50 top engineering blogs (via Twitter / Roddy MacLeod)

20 experiences to have before you die (via Neatorama)

Top 10 Facebook pages (via iLibrarian)

10 useful iPhone shortcuts, tips and tricks

20 uber geeky painted nail designs (Thanks Danny!)