I am getting the same, Spam post notifications left, right and center. I post in groups and it now looks that facebook isn't showing those posts to many people at all. Used to get around 20 messages a day for the same post, Now getting 1. They are also targetting all my accounts with the phone and upload an image of yourself. I think they are targetting groups and reach by marking these posts as spam, and the ones that do get through are not being shown to people.