It is an excellent communication channel and allows you to gather information from people across multiple departments. Moreover, the user interface is very simple, so a person with minimal computer expertise can use it.

The "forum" style makes it easier and more firendly to ask, search and answer question. It helps build a sturdy knowledge base with the collaboration of everyone involved. There is alot of nice features which makes it even better. We use it everyday.

It is easy to post a question and have an answer.