There are many sorts of nonmonogamy and they differ in qualitative fashion. I'm not certain that many people understand that, as the whole topic isn't widely discussed.
For example, I understand the differences between open marriages, poly, and swinging. I can't swear that any given person who identifies with any of those would also understand (or agree) that there's a difference. My former girlfriend, when explaining our relationship to those folks who also knew I'm married, would say my wife and I have an open marriage--which is the only concept those getting the explanation had ever been exposed to.
This, however, is far astray from the topic of getting a board set aside for queer topics.