PavleNikolic
I know it's part of the Y8 games network, and supposedly id.net has an ads system, but they are for flash, and Unity.
There is a plug for C2, but it's for login, and leaderboard only.
You could possibly show ads using an iframe plug showing the flash version.
Y8 has a lot of users, but I'm somewhat wary of using them as they have a rather complicated set up and asks for lots of id verification, that boasts that it offers some sort of protection.
And yet my games wound up there without my approval.
I would add that they were fairly quick to take them down.
They de-listed the game that was using the url of the site I had uploaded my game to.
It's like me putting in an Iframe, and loading your game using bandwidth from your site, and calling it my own.