Full disclosure, I am a grumpy old person but I've not done this... yet.
It's been amusing to see an increase in the number of people "yelling" at FB ads.
"Keep your spam off MY facebook"
"MY facebook is for friends and family, NOT your stupid marketing"
"F*** OFF"
For the most part our sponsored posts generate some really good, healthy discussions and interactions but there's always a few of these grumps sprinkled in. With the exception of the most graphic images, we tend to leave the comments up.
I guess what is most interesting to me is how people have come to believe that they have some sort of ownership interest in "their" facebook page.