Just to clarify...

The site that makes this community possible -- Psych Central -- is ad-supported. We have four ads per page on psychcentral.com. We also have recommendation engines running, and one of them exhibits the behavior the OP discussed. Unfortunately, there's no way to turn this pop-up off at this time.

The community itself (the forums & support groups), however, is (nearly) ad-free after you've logged in. If you have not logged in, you will see ads. We do not have a recommendation engine running on the community, so you should not see any pop-ups here on the community forums.

Best,
DocJohn