From what I can tell, there are no privacy settings, and you can be added to a group without your permission. My friend just did a test where he created a grou

From what I can tell, there are no privacy settings, and you can be added to a group without your permission. My friend just did a test where he created a group, added me, and it showed up in my feed to others without any confirmation from me adding myself to the group. To any readers here: 1. Is it correct that this is the default setup? 2. Is there any way to change these settings? I don't see any, but I may not be a power user of facebook's security settings. 3. If the answers to 1 and 2 are yes and no, respectively, are people as appalled by this as I am? As an example, right now someone could make a group called "Americans for Anal Fingerings", add me to it, and now it shows up in my grandfather's feed. I have done a lot of work to keep from my grandfather that I like anal fingerings, and now all that work is all down the drain!