On no end of occasions, when I have wanted information from a website where access to the page concerned is dependent on entering an e-mail address and/or entering a telephone number, I take great delight in entering a false e-mail and false telephone number to get the information I want. Provided the e-mail contains an "@" and ends in a .com or .co.uk or.tv e.t.c. the verification software has GOT to accept it. Provided a valid exchange code is entered with an erroneous last two digits of the telephone number then again the software cannot reject it.
This reduces my spam and promotional telephone calls significantly.
P.P.