My whole family (4 of us, 2x Lumia 920, 2x Lumia 820), 2 friends with Lumia 920, 1 friend with Lumia 820, 2 friends with HTC 8S, 1 friend with HTC 8x, 1 friend with Huawei W1. I only have 1 Room, and that's for me and my friends to use such as arrange hangouts, share photos, and contribute to calendar events and see when each one of us is free or busy. We also use it to share our notes. Take that to gaming, we just play turn-based games like AlphaJax and Skulls of the Shogun. NOVA 3 multiplayer is ok, but controls aren't great.
Windows Phone in public? LOTS. Although it's hard to tell sometimes because they don't stand out. Most I've seen either has a black or white Lumia phone or a purple HTC with a black cover on it. They're too shy to stand out, that's why I like the song Express Yourself from the Windows 8 ad, hence why I have a yellow 920.