I have to agree with Bob above.
But I got an idea
Perhaps, since MANY people are using the ONLINE service to submit - how about this:
1) after the screener agrees a song should be forward, an e-mail is sent to the submitting person.
2) INSTEAD OF THAT E-MAIL mentioning who it got forward to, it REFERS you to "Check it out" through the taxi website
3) AT THE WEBSITE, BEFORE YOU GET TO SEE THE COMPANY'S NAME AND/OR CRITIQUE (if applicable), THERE IS A PAGE THAT LISTS THE GROUND RULES. YOU AGREE NOT TO CONTACT THE LISTING PARTY. YOU AGREE THAT YOUR SONG COULD BE IN LIMBO FOR 2 YEARS VIA MUSIC LIBRARY, SUBMIT AND FORGET blah blah...
4) Once you agree, you click a button "I agree" on the screen
5) Then you get to your critique and certificate
A similar process can be used for mail in....
just a thought.