Sometimes you spend so much time thinking about things you over-complicate. Enterprise 2.0 can be very simple.
- Do you believe that there is business value in who you know as well as what you know?
- Do you believe that a strong network of contacts can help you get things done and make things happen?
- Would you like to help your employees get things done and make things happen?
If so, then the question is not why would you use social software, but why would you not?