Google Adwords is hands down, the biggest pay-per-click marketing platform. No other company can send you the same volume of traffic and with their evolving mobile advertising platforms the opportunity is getting bigger and bigger. But before you jump, make sure you know what you are doing. It isn’t as easy as it used to be and if you aren’t careful you can lose a lot of money pretty quickly and Google is a little short on sympathy and is not known for giving money back. And finally, make sure you read their policies to make sure your website and offer is Adwords compliant. Google is quick to penalize new accounts that violate their policies and getting a penalized account reopened can be pretty darn challenging.