Here are some very useful links from other bloggers on their tips for adoption of communities, social networks and collaboration:

1. Christopher Carfi talks about Prerequisites For Setting Up A Business-Driven Web 2.0 Effort
This includes: Why, Who, Where, When and How.

2. Larry Cannell talks about his five tips for gaining Enterprise 2.0 adoption.

3. Jake McKee wrote about six best practices for companies who want to interact with existing, grassroots communities at Community Next.