Any forum for publishers and advertisers to deal directly, bypassing ad networks?

Does anybody know about a forum or some place in the net where publishers and advertisers can contact each other directly without going through an ad network?
The reason I ask is I have a chrome packaged app getting some nice traffic, and there are technical limitations that impede placing ads through usual javascript injection and instead all needs to be handled manually.

Thanks in advance for any hints.

There is lots of forum with publishers. But I never seen any mutual forum, and my guess is that would never be reliable, because, by that, there is a huge chance to bluff the advertisers by generating huge automated/false traffic.

I think dealing directly between parties would actually create a more trustworthy environment, as opposed to dealing anonymously. You think ad networks have better protections against click fraud? I’d appreciate if you could point me to some of those publishers forums. Thanks!