This is for a site concept I'm working on.

Can multiple AdSense publishers exist on a single page? For example, imagine a site that I run, on which YOU contribute.

If you contribute an article, I want the article page to have MY Google Ads at the top, and YOUR Google Ads in the page.

To enable this, each contributer would have their Google "id" stored in the site's database.

I have a question into Google about the legality of this, but haven't had a reply.

Thoughts?

Against adsense TOS you are not allowed to have two or more different publishers ad units on a single page.

I would encourage anyone else curious about this to contact Google directly. The answer I got from their Adsense technical support department is quite different.