Facebook and Bisexual Erasure

I’m bi and my Facebook lists both men and women in my “interested in” section. I’m also a member of bisexual and GLBT rights groups. It should come as no surprise that queer site ads show up on the site. But it’s always lesbian, never bisexual. I get “Need a Gay Girlfriend?” and “Lesbian Dating” along with gay pride products. I never get bisexual dating ads or bi pride products. The SpeedDate app only allows you to see matches for one sex, not both.
But to be fair this may not be entirely Facebook’s fault. Maybe no bisexual dating sites pay for ad space. I’m not sure if the SpeedDate app was developed by Facebook. If it wasn’t then the blame lays on the developer.