Explicitly in the agreement that you (and we) agreed to in order to participate in the website, in the fine print of 6.3.o, :
6.3 Content Standards. These content standards apply to all User Contributions and use of Interactive Services. User Contributions must in their entirety comply with all applicable federal, state, local, and international laws and regulations. User Contributions must not:
(blah blah blah....scrolling down to "o")
(o) Request personal information from or share personal information with any broadcaster or other user, including financial information, email address, telephone number, or mailing address;
There must surely be an equivalent clause in the performer's agreement. This is to keep us safe on both sides of the screen.
Capisce? Quote