Kathy Sierra on User Communities

Kathy Sierra at Creating Passionate Users: User Community & ROI?

Kathy's post has practical ideas for how to mobilize and reward your community with a small marketing budget. I'm not sure the post is really about ROI, but it does a nice job of describing the potential value of user involvement and how to reward participation.

Part 1 of the series was: How to Build a User Community Part: 1.