I know a lot of us are on Facebook (I even finally joined...) so I have turned on FaceBook for CU. You'll
see the familiar FaceBook Login button up at the top of the page.
You can "Link" your CU and FB accounts if you want. The option comes up when you 1st try and sign in to FB via CU.
You will also have the OPTION to publish to your FB page if you want to. When you create or comment on a thread there is a checkbox next to the Submit button that will let you FB Publish.