[Voltron87]

I have been accused of collusion in SNGs several times, for using the SS keep alive tactics. I folded to a shortstack BB from my SB for 100-200 more 4 straight times, and the opponents (who I had stolen 2500 chips from- making me a near lock for 1st [img]/images/graemlins/grin.gif[/img]) complained and sent in emails.

When someone is all in and two other players are playing on the side, there is nothing wrong with checking it down to maximize the chances of an elimination. If you and I are playing on the side while someone is all in and I communicate to you "I have a flush draw-check" that is cheating. The 1st example is also unprovable, like you said.