A Knowledge Community is often referred to as a Community of Practice, which tends to be individuals that are passionate about how you do work. An example would be that I am challenged on a technical community where we can evaluate the knowledge in a feedback cycle. The difference is when we get a red and green state that is very high, we want to filter those to the top, but we need a body of people that can evaluate that knowledge and then be able to assess whether or not action needs to be taken. We want to make sure that the knowledge is healthy so when it gets back in the stream in the next iteration it can be reused for the next consumers.