I suspect that neither our dear admin,
bluegray V (one day he'll have to explain the lineage of that moniker), nor the forum hosting software can exercise any control over the banner ads despatched by Google. I suspect further that these ads pay for some of the forum's running costs. Such are the vagaries of the Internet.
One recent example I happened to notice of a monstrous clanger in the context of a sceptics' forum exhorted its audience to click and learn how "Intelligent Design Theory showed Darwinism to be wrong!"
The one about "I Had High Blood Pressure" (
www.bloodpressurenormalized.com) is a good candidate for producing exactly that which it claims to cure.

'Luthon64