I was testing it using two regular users and I found out that who is posting can post anything in any feed and only him or the administrator can remove the post. 

So if someone posts something that I don´t like I can´t even delete it! I must Flag and wait for the moderation to delete it. The worst of all is the lack of privacy: how it possible to let anyone posting in your feed by default?

After setting privacy to "friends only" I was able to block post from guests. But event my friends can troll me and post something that I don´t like and like I said I can´t delete it!

Does anyone know a better plug-in?