I choose to keep my personal and business life separate from my fetish life. For that reason I only have one UMD'er on Facebook, and it's someone I feel I can trust.
A way around this would be for those of us on Facebook to create a separate identity for the wammer version of ourselves. Personally I don't have time to do that, and what would it benefit us anyways, we already have the capability to be friends with one another on here.