ZnHc said:
but what do you mean with the third point?
Do you mean for example they do it for mood state?
For biased interests?
Discouraging?

What I mean is, what if their reason for downvoting a scat image has nothing to with the fact that it has scat in it? It could have bad proportions, coloured badly, very sketchy line work or a whole range of other reasons.

For example, I downvoted post #44642 because it's sketchy as hell. I don't like hyper and have it blacklisted because it's way too disproportionate for my liking yet my reason for downvoting that one has nothing to do with me disliking hyper. Now you could just say "If you don't like sketches, blacklist sketch." except I don't have a problem with sketches in general and if I did blacklist it, I would miss images like post #341563. For those who want a visual:

post #44642 <- Messy sketch vs. Clean sketch -> post #341563

Genjar said:
Feel free to use votes in whatever way you want to use them, as long as you don't abuse them. (Such as by downvoting all uploads by a specific user, etc.)

I feel as if he only made this because someone downvoted something of his.