Moving your community to Facebook ....

Here's link to an article with reasons companies give up doing their own internal "communities" and opt-for established sites like Facebook.

Reasons listed for building community on Facebook:
1. Built in audience;
2. Built in viral features;
3. Minimal community management hassle;
4. Minimal development costs;
5. Rapid roll-out.

With downside including:
1. Don't own it;
2. Limited to their platform features;
3. No data ownership (can send messages, but can't get email addresses);
4. Competitor can do same thing.

Good summary.