The "Create a filter" option on the stackexchange.com/questions page gives one the ability to display "Just questions tagged with the xxx tag". But one of the nice things about Stackexchange is the ability to view Q&A on a broad variety of topics. Still, there are a few topics/sites for which one may have no interest whatsoever. For me, that would include rpg, scifi, and tex. It would be great if filtering would allow one to specify negatives, that is, "Don't give me any results that contain tags xxx or are from sites yyy".
Sounds like this question has already been asked several times. For instance, here, but I'd like this filter to apply not necessarily only to the "hot questions", and it remains unanswered. Another question mentions negative filtering, but in the context of email subscriptions, and the answer indicates the facility is not available, so here is a feature request.