Online Marketing Effectiveness
March 5th, 2011

How to track the effectiveness of advertising?
I have a marketing job in a medical environment and the need to monitor the effectiveness Linse ads of various services. I have a paper survey to be filled, but I can do this online. I'm not educated marketing, journalism only and design. can anyone suggest some online resources.
The marketing material has a code or make mention this add when you call or visit. To Save the impression that you could simply ask each client how they heard of their services.
