When anyone asks me for a phone number these days, I give them the number I use to connect to the internet.

Back when I used to have two telephone lines, I kept the main line unlisted and used the second line (for my FAX machine and computer dialup) to give out on subscription forms, mailing lists, etc. I left the second line connected to an extra answering machine with the message along the lines of:

"Congratulations! You may already be the winner of our $1,000,000 sweepstakes! And because you are calling us during our bonus round, you are entitled to $666,666.00 cash award to help cover taxes on your $1,000,000, should you be our winner! Please hold for the next available representative so that we may verify your personal information for your entry in our sweepstakes!"

Then the answering machine would record 90 seconds before disconnecting.

Once a month or so, I would play back portions of the answering machine, and I'd get a really good laugh out of the responses. One of the most memorable ones was where a telemarketer was telling his fellow associate about how he had just won $1,000,000 and was going to "quit his shitty job trying to scam idiots out of their dough, buy a Ferarri, and take a cruise to the Bahamas."