Parents need to know that there's one advertising banner on the right side of each page, but you can resize your browser window to avoid it completely. Some games are sponsored by companies, such as Subway's Quest for the Golden Pyramid. Other ads are mostly promotional for upcoming WB shows.
You are really gonna bash a site for trying to make money through ads. Who do you think you are. Not every site can run on donations alone. Waaa. My kid had to see and ad. He just wanted to play games. I'm gonna go cry on the internet about nothing.