there's certainly massive amounts of porn, esp. if you look at active traffic, but perhaps even worse than that is random crap collected for no good reason and

there's certainly massive amounts of porn, esp. if you look at active traffic, but perhaps even worse than that is random crap collected for no good reason and "backyard genius" trash content pooled together by the gigabyte quality and traffic are grossly uncorrelated, so finding stuff is a huge challenge