If you care at all about this stuff, do yourself a favor and read <i>"The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses"</i>. [1] Eric Ries shines a light on vanity metrics, tells you what you should be tracking, and ways to track it. [2] He goes into detail about how companies, big and small (himself included), often track the wrong metrics, which in turn give wrong indicators, he helps you turn that around.<p>[1] <a href="http://www.amazon.ca/The-Lean-Startup-Entrepreneurs-Continuous/dp/0307887898" rel="nofollow">http://www.amazon.ca/The-Lean-Startup-Entrepreneurs-Continuo...</a><p>[2] <a href="http://en.wikipedia.org/wiki/Lean_Startup#Actionable_metrics" rel="nofollow">http://en.wikipedia.org/wiki/Lean_Startup#Actionable_metrics</a>