There are certain users who send me messages with suspicious links which may lead to malware, so in order to avoid any infection I just mark their messages as spam and block them right away. By the way, I'm not a fan of fetish as such foot fetish, bloated, deformation, meltdown and alikes. Since dA doesn't have a feature to filther the search results it's better to block those who make these fetishes. I don't want to forbid people for doing their thing, I just don't want visual pollution since I have no interest in that kind of stuff. Don't bug me if I've blocked your friends because they did sort of fetish, because I won't listen. It's better for them to just move on instead of begging me to see stuff which I'm not interested in the search results.