Linux-compatible wifi cards?

If you're in the market for a wifi card (be it desktop or notebook) and you're an avid Linux user, you may be interested in knowing if a card will work with linux before you commit to the buy. The authors of passys.nl have set up a user-contributed list of wireless cards and their linux compatibility. You can search the database by manufacturer, chipset, or card interface, and the results are color-coded for easy skimming.