Yahoo! Quiz Bowl Group -- Tournament announcements and flamewars and such.
Stanford Packet Archive -- Home of many old Quiz Bowl packets for you and me for free.
The Maize Pages -- Sprawling page of College Quiz Bowl contact information from Michigan folks.
NAQT -- National Academic Quiz Tournaments, a question-writing company which supplies questions and mentorship for many tournaments, including our High School ones.
TRASH -- Testing Recall About Strange Happenings, a pop-culture Quiz Bowl league.
Here is the TRASH Blog (probably more recent).
QB on Wikipedia -- Because we're all egalitarian like that.