just google your handle..i have had the honor of being falsely blacklisted several times..i have Aids and every imaginable STD known to man..the site is mostly made-up vindictive bullshit..

Depending on the BL site...simply google your handle, alias, phone, email, real name and then add "blacklist" to the search.

If you want to see if you're on private sites...create a fake provider account and join.  I wouldn't waste my money on that...but others seem to want to see what's out there.  Or you can just ask others who are paying members to see if you're on there.

I'm afraid that with the explosion of paranoia here that most folks (both sides) are on various sites for moronic reasons.  Don't be terribly concerned about it...most of this crap is pure nonsense.  As I said to Sage...the best methods today are to backchannel with those you trust.