BrightKite SMS syntax

From the top of my head:

BrightKite basics

@address - check in at an address. e.g. @1026 Valencia St, San Francisco, CA Shorter forms can sometimes work too, e.g. 1026 Valencia St, SF CA
MARK newplacemark - creates placemark newplacemark for your currently checked in location. e.g. MARK ritro
@placemark - check in at a placemark. Note: you must have previously defined it. e.g. @ritro
!message - posts a message to your currently checked in location. e.g. !the line is out the door
?venue - does a search for venue near your currently checked in location and returns options to pick from. e.g. ?Ritual