No, I know for a fact anyone cannot say anything. I joined a Christian group on Facebook, and they not only nixed me, but notified Facebook, who then locked me out of my account until I provided a government issued photo ID. I was able to open another Facebook account, but after realizing that I was going to have to re-friend everyone all over again, I just canceled it. They are selling everyone's information. Most people don't care because they're so wrapped up in themselves, but when one considers just how much money these corporations are making off this stuff, it makes one wonder why more people aren't asking for a kickback. If they want all my information, they can pay me for it.
Just to give you an idea of how far I've taken this idea, I removed the badges and logos from my vehicles. They're all stealth. One of my cars is a rare enough model that people will routinely approach me and ask me what it is. These are my cars. I own them so I'm not going to provide free ad space on my car. They can pay me if they want it that bad.
My primary reason was that it just looks better. The rest is an added bonus.