On the other side of things, coming in as a poly person from the midwest, the openness on the topic is one of the things that really drew me. Around here (Ohio), one NEVER talks about such things, unless you happen to be in a poly-specific forum, or with your poly friends.

It seems like the rationalist/skeptic community is the one exception to this, and I find it a breath of fresh air: A community that isn't there specifically as a poly group, but where it's not a completely taboo subject either.

Even before I personally ever identified as poly, I don't think it would have bothered me to see it mentioned here. But I can see how more socially conservative folk would be put off by it. I don't know if that's our target audience, though.