Facebook if used correctly should be a great way to network and exchange ideas. Most of the time I find that it brings us all together in a common sharing of valuable life experiences, often leading someone that needs help to someone that needs to help someone.
I never allow myself to participate in negativity and delete and block anyone that has this sole purpose, more on this in the class.
My rule on Facebook is NO Politics … Your mileage may vary on your page.
If you are a business owner you should always remember that, Do Not Offend a customer!