Let's see.... During formal recruitment, our silence extends from dessert parties (Monday late afternoon) to bid day (Tuesday late evening). We don't have coke dates on Tuesday, the day of preference parties. It's difficult - registration is on these two days, and if we see a PNM up the hill at registration, even if she says hi to us, we're not supposed to respond.
I actually can't remember what the silence policy is for our informal recruitment, although I'm sure our recruitment chair will remind me.