As the founder of this group I think part of the issue is there is a legitimate MMF Bisexual Video Thread found here :
MMF Bisex. It has been dead lately because all the videos that should have gone there have gone here. Perhaps it is because the title doesn't say porn. Also, as in all other areas, bisexuality gets hidden , this time under the category Everything Else, because typically male bisexuality so often gets swept under the rug. Also so many people are not sophisticated sexually enough to recognize the difference in the terms homoerotic and bisexual, largely because 90% of bisexual males are still closeted so they never discuss the finer points with friends. There is gay culture, straight culture, but no bi culture. None at all!!!