On: Basecamp and Backpack from 37signals use PHP

[ivan]

PHP Easter eggs tell us everything:

http://basecamphq.com/?=PHPB8B5F2A0-3C92-11d3-A3A9-4C7B08C10000 http://backpackit.com/?=PHPB8B5F2A0-3C92-11d3-A3A9-4C7B08C10000