Flugtag in Scotland

has anyone ever heard of Flugtag?  or have ever been?

i've seen the commercials the past couple of weeks on the TV and thought that it would be fun to check out the one in Scotland.  they do it annually in San Francisco (where i originally heard about it).  it's fun to watch people and their odd contraptions.  you can check it out at:  http://www.redbullflugtag.co.uk/. 

and for those that might want to...it's free to enter the competition as well.