Public library databases

It seems to be -- finally -- entering the public consciousness that public libraries offer great value in access to online databases. A Metafilter poster links to several, and many more readers add links in the comments. (Many commenters seem surprised at the concept, though, so this may not have quite gotten through yet.)
One comment links to this timely story about Maine's public access, in the Kennebec Journal.

I started collecting a few links recently, although since you can't get into any libraries you don't belong to, it's hard sometimes to find out what they contain. It may be worth the extra $100 to join the NYPL, though (although it looks as though you have to go to NY to get one). I love my access to NCLive but there aren't enough online newspapers in the Newsbank section.