What are three or more web sites you’ve used recently as a player or GM? Why do you use them? What do you get from them?
20’ by 20’ Room, of course!
But also:
ThePulp.Net, which is the best source for pulp info, plus links to lots of free pulp ebooks.
The FAS IRP, which is the Federation of American Scientists’ Intelligence Resource Program. Essential for modern-day espionage/technothriller games. And for Feng Shui.
Incunabula, hub site for the Ong’s Hat mythos, which I sprung on my superhero players recently.
Other tricks… if you search Google Images for “party pictures,” you’ll get a lot of candid shots. Great for pictures of NPCs who aren’t supposed to look like movie stars.
Oh, yeah, speaking of photographs: the Library of Congress put its Prints and Photographs Catalog online (original). For Boston-specific photos, I use this site. Yale’s Beinecke Library also has a very nice digital collection.