What's the verdict on
this case, in which a mixer URL is used as part of an escrow contract?
Where's the URL?
That's just GenesisMix.cx, mentioning Bitcointalk.org is fine, but not if you mention
https://bitcointalk.org/Also the URL link behind the ANN thread is to Altcoinstalks, not the mixer URL, so I don't see anything wrong with that.
The only problem I see is the thread posted in Service board, it should be Reputation, Off topic or Archival.
Since that doesn't have any real links to mixers, it may be OK. Probably we'll leave it alone at the start and see how it looks after a few months.