As of today on both Dev and Main you can now create a Google+ Hangout directly in the Google+ interface, then just add the Roll20 Hangout app. If you do so, it will present you with a list of your current campaigns that you can choose to load into the hangout. So it's no longer necessary to launch the hangout from the Roll20 site, as it has been in the past. In addition to this, your players can create accounts without ever visiting Roll20 first. If they launch the Hangout app they can just click a button letting us know they're a new user, and we'll handle all the necessary account setup based on their Google+ information, getting them into the game with just one click. Finally, you can even create new blank campaigns directly from inside the Roll20 Hangout app. So in theory you could now use Roll20 via the Hangout app without ever really visiting the site (although of course you'd be missing out on the forums, help documentation, and lots of other neat stuff!) But hopefully this makes it easier on GMs to get a game going, and easier on your players to join a game via Hangouts without even really needing to know what Roll20 is. Enjoy!