Crossword puzzles are a great way to stimulate the intellect and imagination, and you can learn something new every time.  The new website Agile Crosswords has a wide variety of challenging crosswords to choose from, and a free online crossword maker that will let you make a crossword puzzle on whatever topic you choose, quickly and easily.  Each crossword puzzle you make gets its own easy-to-remember web address, so it couldn't be easier to share them.  Make a football crossword, a racing crossword, or a crossword about whatever topic you are interested in, and share it with whomever you wish in just a couple of minutes.

The website has several other nifty features as well, including a timer during play and a high score system for tracking the best crossword solvers.  Planned features include a rating system for the user-generated crosswords, and daily crossword puzzles for each of several difficulty tiers.  I know there are a lot of crossword fans out there, but I also imagine that this site might have some great uses for educational purposes as well as recreational.  Now I just need to find an online Scrabble game with a good AI...