Crossword puzzle resources

I've started collecting links which are crossword related. I'll use this post to keep the list.

1. Crosswords Online: Cruciverbalizing on the Web by Kirk McElhearn This article is from 2003, so it's a little out of date. It's mainly focused on the NY Times puzzle, and it has a nice summary of crossword puzzle applications (primarily focused on Macs).
2. Ray Hamel's crossword page has a thorough list of links to crossword resources on the web.