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Yes, it is possible, but bid bots are not the problem. The problem is the majority of users putting in zero effort and milking the system without any proper systems in place to prevent it and the ease a user can spam and plagiarize without punishment.

Bid bots offer a fair and transparent promotion system that was only available to the 1% in private underground channels. It's a form of advertisement and promotion that allows users to pay to get their content seen.

Trending was no better before Bid Bots, and in fact, it was more of the same good old boys that had contacts to get enough votes to place them there.