Remember back when? Q post 1777.
Q said "post it anywhere, we'll find it". And they did. Also, Q frequently posts Patriot twitter accounts and don't forget the long lists of MSM links to anti-Q articles.
Q team definitely scans and scrapes all over the place.
"I’m pretty sure at least one of us posts on 8ch."
I do. I think there are about half a dozen of us (at least) who post on 8Chan.