What's caused you to drop a neighbor?

I dropped one because during the I&S event as he placed 3 of the same KrustyLand debris letters next to each other which I found offensive, but considering the amount of redesigning everyone had to do at that time I gave him the benefit of the doubt and hid him for a few weeks but, still there when I went back. I'm considering dropping 2 more as I suspect them of dubious gameplay methods. During the past couple of events they've had an extraordinary amount of content, which I accept can be explained by spending a whole heap of money on buying donuts (I say buy because they're both under lvl 300 unless there are legitimate ways of getting oodles of donuts for free that I don't know about) but I now think that 1 must've been using dubious methods during Bart Royale as they had the ruffian fort at least a week before the act it related to started. Plus I don't get rewards for the actions I perform in their towns, when I tap, things just disappeared and no pop-up box saying you've helped whoever all you can today, unless that's just a random oddity which sometimes happens? I know that last bit maybe a little off topic, for which I apologize