I completely get where you're coming from. It does sometimes seem as though this effort is a little bit like trying to empty the ocean with a thimble. As long as there are no structural changes to prevent this sort of abuse on the 'blockchain level' (if that's even possible), it's basically up to someone's biased opinion to check whether something is abuse or not. That's why I've purposefully chosen to highlight only the most obvious cases here, something that most Bid Bot owners agree upon (single image posts with little text).

I'm not sure if that would work, since there a very large difference in upvote value that each Bid Bot offers. If someone picks 3 services and manages to purchase the largest possible vote for each of them, they can still end up with a +$100.00 vote for what might be perceived as a low-quality post.

Imgops is currently the only tool I use to check whether an image is original. I'm one of the few people who still uses Firefox as their main browser, so NooBox isn't something I've heard about before. Might have to give it a try with Chrome Store Foxified, the ability to just take a screenshot would definitely be very useful.

Yeah, there are definitely other lists as well, I'm not sure if other bots use them though. I know that Steemcleaners uses their own list for example and Smartsteem definitely also has their own list. The reason why I only mentioned BuildaWhale's blacklist is just because @themarkymark is pretty active in the anti-abuse community, so I trust his judgment. So, yes I would actually recommend other people using their blacklist as well.