We were selling a product to outbound telemarketers. So I bought a bunch of secondary phones for our sales guys, and pumped those numbers into every data list w

We were selling a product to outbound telemarketers. So I bought a bunch of secondary phones for our sales guys, and pumped those numbers into every data list we could find... prize draws... surveys... etc. They were flooded with telemarketers. And if they spotted an issue (bad quality audio... big gaps at the beginning of call.. and so on) they would open up and insist the telemarketer help them get in touch with a manager so they could help improve things. We had a spike of sales during that period, before the chaos of managing these phones meant we had to stop. :)