Most people are amazed when they learn the extent of people enthusiastic about rock climbing even in areas far from mountains. A lot of the gear used for rock climbing is durable and long lasting, although expensive. It is common for climbers to sell and buy used gear and in 99 percent of situations it is perfectly safe to do so. I started a classified ad section on my website for people to buy and sell rock climbing equipment. It did not take long for it to begin receiving heavy traffic and resulting paid advertisements. Unfortunately, it was a target for irrelevant and spam advertising. I researched third party verification services and learned of TeleSign. I contacted them and was happy to learn that they were extremely confident in their phone verification tool’s ability to solve my spam problems. Their phone verification solution is economical and quickly solved my spam related problems. I am planning on starting an Internet retail store and will use the phone verification tool to help protect me against charge backs as well. Third party verification services such as TeleSign provide many awesome tools for Internet businesses to protect themselves from harmful spammers and thieves.