Cracked.com is one of the top comedy sites online and they create viral graphics that are seen by millions of people. Anyone can apply, you just need to be able to produce content in the following formats.
They don't list any specific payment rates without registering, but they state that if they like your content you get paid. For the infographics you don't even have create the infographic. Just post your idea to the forum and if they like it they will create the infographic themselves and still pay you for the idea.
Get seen by millions if your idea goes viral at: Cracked.com