> Favorite counts are posted publicly, which at least theoretically adds to the user's credibility. Yes, but that's exactly the reason why OP's behavior can be

> Favorite counts are posted publicly, which at least theoretically adds to the user's credibility. Yes, but that's exactly the reason why OP's behavior can be labeled as spamming. You "theoretically" adds to the user's credibility, but by automated means, so the added credibility is actually artificial, which then diminish the value of "credibility by the number of favorites" for everyone.