At least 1 measure should use median instead of average:
* the number of friends per member
because there is a power distribution. If You are using average, the activity is strongly underestimated.
I am also not sure if average time to last visit c…
Lika your start. It seems from your suggested KPIs that they cover many different situations och online environments.
- The membership measuerement is valid for formal memberships lika MySpace, groups in Facebook, Ning etc.
- Newsletter and subscrib…
Here are a few interesting KPI's:
Average session duration
Proportion of active versus passive behavior (active = posting a blog, inviting a thread; passive = browsing, reading articles)
New members per week, with breakdown US vs. non US
Average nu…