Oh, I think the killer knows how forums work. The guy who was so smart as to not leave any mobile/GPS trace, no viable DNA trace, and, I am positive, no cameras trace either.
He is somewhat a pro in this business, is he not? Chris Watts got into his neighbor’s camera. Patrick Frazee left all possible GPS, DNA, matter traces, witnesses, whatnot. BG emerged from nowhere and vanished into thin air. All LE has was from Libby.
So I am sure he knows how forums work. I don’t, but I cynically assume that everything can be traceable, because even as lurkers, we leave cookies (I think).
I am not surprised that he hides behind someone else, or uses Tor, if he lives alone. Or, if he posts, he can mimic the style of a woman, or make some typos, pretending to be an uneducated dude, you know.
But either way, no one can accuse him based on pattern of frequenting criminal forums, YouTube videos, facebooks, twitters, podcasts, msm or non-msm media, or whatever, because think of what it could do to the reputation of the said places. Discussing it is one thing, maybe the LE could use some ideas. But tracing participants will end up killing these medias, this is all.
Too bad he went the criminal way, he’d make a perfect, logical, systematic LE.