[Topix] is a web-based news aggregator and forum hosting site, based in Palo Alto, CA. They say about themselves:
Topix is the world’s largest community news website. You can read, talk about -- and even edit -- the news on over 360,000 of our news pages. Whatever your interests are, we have a news page for you!
Those interests can be quite wide-ranging, as seen by this discussion of where to get heroin. And while I'm not surprised when I see discussions of drug dealing on the dark networks, it's always a bit of a shock to see people typing this stuff into the clear on comment boards on a "news website".