Do you believe members will join your community to share information? Or make friends? Or help others? You’re probably wrong.
These are all symptoms of motivations; typically fame, money and power.
Take blogging, do you really blog to share information and help others? Media and businesses think you do. I suspect you blog for recognition, increased job prospects and having influence amongst your peers.
Your community should offer these 3 motivations amongst people who are similar to you. People whose opinion matters to you.
Which is a roundabout way of reminding businesses that you need to prepare for these real motivations in the planning stages. By all means have a Wiki, but celebrate the biggest contributors to it. Give them influence over it. Promote them to others in your industry.
Here’s a bigger list of things to consider.