Originally Posted by
cutnana
Weird that the web one did not work for you - seemed to work well for me.
For API, on a linux based system you can just call "curl -u EMAIL:PASSWORD -d vid=VENUEID -d private=1 http://api.foursquare.com/v1/checkin" (you can get the venue ID from the above link).
Private = 1 means no publishing of your whereabouts.