Background: Recently, my newsfeed shows more and more posts from topics I am not at all interested in. These posts have no connection to people in my circles, my communities or collections. I use G+ for news and socialising on topics like Android, Google, technology in general, photography, stuff like that.
Increasingly, my feed is filled with memes and teenager posts and music stuff, marked as "Hot on Google+" or "Based on your interests".
I already checked my circles and my communities.
I never interact with these posts, I don't reshare them, +1 them or comment.
I even checked my ad profile to see what Google thinks I'm interested in and what age group I'm in.
My only options for those posts are "Mute" and "Report Abuse". Since disinterest is no reason to report posts, what does "Mute" do for a post I haven't interacted with?
How do I get rid of all those weird posts, so that my feed revolves around my interests again?