Participated in a Hangout for the first time today. I've watched some that were recorded on youtube but this was the first where I've been a participant. I've got to say that it was pretty slick.
The weak point was the audio. It was o.k. but sometimes there was a lot of echo. Other than that though it was pretty impressive. As our organization moves to Google Apps I imagine I'll be using it a lot more. When my kids see the goofy little graphics that can be put into the video they are going to flip.
The other two participants today were on Windows 8 - I was using my Fedora 18 machine. I had to install something to get it to work but Chrome helpfully gave me a list of options for the install and one was a 64 bit rpm. Nice.
I'm not naive about Google - and things could go all square shaped fast with them but I'd be lying if I didn't admit that I love the convenience and functionality they bring to my life.