1. You can blacklist uploaders who mainly upload stuff you don't like (in settings) 2. You now can hide tags you dislike, and watch tags you like (configure it in "my tags") 3. Galleries with some tags (like guro and snuff) should give you a warning before you even see anything, if they don't you disabled it
Why would I block someone with clearly fucked up tastes? That's like asking to turn away from a train wreck. You probably should, but you keep looking anyway...