Apparently “Social networks Bebo and MySpace were the two most searched for terms of 2006 using Google’s search engine.” Actually this is a useful list so I have linked to them all – with one joke inclusion for the guys. 
1. Bebo
2. MySpace
3. World Cup
4. Metacafe
5. Radioblog
6. Wikipedia
7. Video
8. Rebelde
9. Mininova
10. Wiki