Internet / Computer

Buy

Tom's Hardware
Scorpion Technology - we often buy our hardware here
EBay - great for kids' clothing, old roleplaying books... anything

Virus

Symmantec's Virus Hoaxes page
Symmantec's Virus search page

Search

Google - obviously
Superpages - nice region-specific stuff

Compare

Michael D's Region 4 DVD Info Page - compare region specific DVD releases
mySimon - compare prices and stores from around the web

Other

SlashDot - news for Nerds; stuff that matters
Warchalking - find free wireless Internet points