foursquare for webOS has a configuration problem and was unable to connect to your foursquare account
Cause of error: unsupported_response_type
Go to the app gallery
I tweeted the developer to see if he has had any reports.
I have the app but still haven't ever signed up so I can't test right now.
I love physical keyboards... but there is two devices that would make me consider a slab, one is something running a full version of Open webOS. The other is an iPhone!!!! HA HA just kidding (about the iPhone that is)...