Seems that it's gaining a lot of popularity in the US but not sure of other places however I found this extremely well done video from Sweden:
http://www.youtube.com/watch?v=1DFP44Eogio
We have three or four local places to play....and it's free...except maybe a park pass.
I've played a few times now, and have found that my best technique is a 'tomahawk' throw.
These are not your typical beach Frisbees, and it's probably not a good idea to play catch with them.