Without getting incredibly selfish I'd like to explain something really quick.
I found this one some other posts not just my own so I'm not making this because it's just happening to me I'm making it because I feel like it can decrease and artist's self esteem to see this happen.
A while back I saw a picture involving the following.
diapers
scat
mlp (my little pony)
The picture had 37 downvotes and 20 something favorites. The art in the picture was great the artist was great but the content was obviously the reason for the downvotes.
So allow me to explain something.
The upvote and downvote system is NOT intended to express your personal opinion of the content in the picture. I really really don't like diaper/scat fetish's so I blacklisted them but I'm in no way going to downvote the pictures because I don't like the content. The down/up vote is not intended to represent the content of the picture. It is meant to rate how the picture displays it.
If it's really really good art but involves a scat fetish or something there is no reason to downvote it. So it's not your cup of tea congrats it's not mine either but I would sooner upvote the good art then downvote the fetish I don't like.
I'm sure you all understand what I'm saying but to make it clear.
The up vote and down vote system is to rate the art. Not the content of the picture. Blacklist it if you don't like the content but do not downvote it just because it's not your thing. The voting system is (I would think) Intended to give the artist a good idea if he/she is doing a good job.
The more you downvote a picture with a fetish you don't like the less that artist feels like drawing it. I know most people would say "I don't care" But no one wants bad feedback. You'll still draw it but you'll hesitate to post it. I'd love to post more grimdark and bloodplay art but after my first one got a bad reaction. (However minor it was) I feel like it's not a good idea.
The least you can do is not even vote. If you really don't want to use the blacklist option so be it but downvote art because of the way it displays the content. Not the content the art displays.
Updated by abadbird