Does anyone know of a good Social Media Marketing tracking tool/device/software?

I’m looking for a reasonable means of tracking my Social Media Marketing campaigns. So many of them are rather expensive and, at this early stage, would not be feasible for my business.

Try this Online Media Monitoring: 26 Free Social Media Tracking Tools
http://www.marketingpilgrim.com/2007/08/26-free-tools-for-buzz-monitoring.html