I just paly this game http://www.haxball.com/ and to my suprise they add it an ad to the side of the screen. The contract use of cirrus specifies that you cant use it in a comercial way, but at what point somthing transforms from just ads to somthing comercial.
I whant to know if its leagal becaruse if its valid im going to do it too =)
I guess it is...
Commercial is when you are selling some product, for example a game, which is built using Cirrus technology.
Banners networks(as Adsense) is not commercial, at least not for website owner.
Please correct me if i'm wrong.