Oh come, yours is all over the internet. You're admin of a facebook group FFS, and facebook uses real identities.
Anyone who is a member of facebook just shouldn't ask people to try and guess their ID. They effectively do not have privacy in the first place, it's only a matter of time and we're not talking a lot of time either.
Hence not using my real name, using the name most people know me as, sort of real alias.
Hence not using my real name, using the name most people know me as, sort of real alias.