I checked the threads tagged "bisexuality" and didn't see anything that had been posted to in the past year or so that seemed similar.
Sometimes you just have to do a regular or advanced search rather than a tag search, because not every thread gets tagged. But here are some other discussions you may find relevant (I might start tagging them). BTW, resurrecting very old threads is perfectly fine to do here... :
Gay, Bi-, Queer Polyamory
Survey Question (r.e., bisexuality & biamory)
Labels: Poly, Mono, heterosexual, homosexual, etc.
why "poly women" are bisexual ???
Why are YOU poly?