'Keto' was the big thing with spammers here up until recently. (I'd typically ban at least half a dozen spammers advertising keto products daily). However 'keto' ads are now becoming much rarer, with 'CBD' spam now taking its place.
I suspect that CBD oil scams (using actual ads, rather than just spam posts) will also become far more common. Remember that The Answerbank gets its ads from third-party sources, some of whom don't seem to be too bothered about the trustworthiness of the people that they accept advertising from, so its wise to be wary of any such ads, even on this site. You have been warned!