You admit people who read this blog have submitted to your agency. Perhaps even current clients read this blog. But do they know they are clients of the agency employing Miss Snark (or perhaps of the lady herself)? Has someone (current client of you/agency or seeking) figured out who you are and specifically contacted you about it? Would you confirm it?
While I'm sure there are several smart literary agents in New York who have dogs, even poodles perhaps, how many would lay claim to all that is Miss Snark?
No one would dare.
Miss Snark would be forced to eviscerate them with fervor.
Several people in publishing know Miss Snark's workaday self. Clever little beasts figured it out and plied her with enough liquor to loosen her tongue. That came in handy when Miss Snark was interviewed about the James Frey mess and naturally enough, asked to verify she was indeed an agent.
Those few people who do know have so far not demanded hush money, but the year is young.