I have a FB page mostly to share some basic stuff with more distant relatives and a few friends. However, I love to post links to articles critical of Zuck and FB.
To a similar extent, same here.
I do a lot of ranting on the various newspapers' comments section. Lately they have been demanding a Facebook or Yahoo ID, so I signed up with FB with minimum/misleading info and give 'em them. After venting, I check the little "post on Facebook" box in the distant hope that it gets a little further mileage.