We have round-abouts or circles in Washington, DC. I invariably get stuck in one and have to make a few circuits before I can figure out which street I want to exit. I frustrates my navigational device to no end! You can almost hear the "hmpffff" in her voice when I miss the exist and she has to recalculate the route!
Our town has talked about putting round-abouts on one of the main roads to regulate traffic better. I remember years ago, the trend was to take out round-abouts.