But if a P.A is involved, then yes, I agree, they should (u hope) sign their name after each and every correspondence with you. (Maybe they even do a quick spell check too, lol).
Networking (gasp) is a good way of screening for example ...get involved (somehow) on the board, and know who it is you will be meeting (minus pictures boys!)
Screening is not that hard! If in doubt:
* get him on the phone and don't be afraid to ask. him questions.
* ask the woman here on the board if u are not 100% about seeing anyone. ...Trust your gut #1