SOCVR room: only alert about posts on SO
SOCVR room: only alert about posts on SO

After my last commit, this behavior changed.

ArtOfCode-/SmokeDetector,NickVolynkin/SmokeDetector,NickVolynkin/SmokeDetector,Charcoal-SE/SmokeDetector,ArtOfCode-/SmokeDetector,Charcoal-SE/SmokeDetector