Facebook fan pages tend to be populated by agreeable sorts. You might encounter the odd wind-up merchant but generally speaking a 'like' is just that, and all involved get along swimmingly.
But when you start moving in to sponsored post territory, it's not just your fans seeing your latest update, it's everyone. And everyone can comment.
Which sometimes backfires...
"I'd rather shit in my hands and clap". Strong words there from Barry Schofield.
Here's the song in question, personally I think it's alright.
Haha, just kidding. Fucking awful.