For those of you out there who struggle with Key Performance Indicators (KPIs) there is a great resource out there: the KPI Library. “KPI Library helps to find, build and share Key Performance Indicators (KPIs) online.”
They have a large collection of KPIs that you can browse to see what might fit with your business goals for your web site. They even provide a collaborative environment in which to build and share your KPIs with your team as you work on developing KPIs for your business.
I recommend the KPI Library as a great resource to any web analytics professional or online marketer.