I breifly joined an online room, and quickly realized I didn't know who the hell was in there, even though I knew it was a "friends lounge". This new name thing is kinda screwed up. I used Chrome Tuna, but it shows up as C. Tuna, so when I was coming in, I could hear people saying, "Here comes either Charlie, or Chrome."
I have since changed it to # for the first name, and ChromeTuna for the last, and that's pretty much how it will display in the room, so no confusion. There's a 12 character limit, and you can only change your name twice.