Effectiveness of the user-generated content
What type of posts (e.g., questions, discussions, ideas) are successful?
What type of blogs/articles written by the members drive the best engagement (comments/visits/ upvotes)?
What types of polls are able to get the most number of responses?
What types of events get the most number of turnouts?
Community vitality
Visitors per month
Number of posts per month
Member growth
Retention rate
Stickiness
Churn rate
New Contributors
Text mining
Term frequency
Sentiment analysis
Impact on the business goals
Customer acquisition
Retention and revenue
Customer support
Brand mentions