Board Thread:Casual Discussion/@comment-98.196.46.87-20150125190016/@comment-26045225-20150130112256

You don't get the donuts just for visiting, but for helping them. When you tap a friend's building to "help" them then randomly a donut pops out. For me it's about every 20-30 friends Springfields (every 60th - 90th tap on a friend's building). So when you never experienced getting a donut you may have not tapped buildings at a friend's Springfield for all that year you're playing ;-)