--Lighting - - behind my backdrop is a bay of windows and our sliding door - it lets a lot of light in.
It added tons to the quality - see, this image was taken with my webcam - I'm not sitting in the dark!
--Length - I think people don't have time to dedicate to watch long videos, so keep them short and fun - I aim for about 20 minutes max.
Fun, right?! I've only done a couple of Google+ Hangouts On Air, but I'm thinking I should do more - maybe once a month or something? Do you like them, or would you rather read things than watch a video?
I also had the idea to Hangout On Air with a couple of you readers - we could chat, ask each other questions, show projects, whatever - would anyone be interested in that? email me if you have ideas or are interested (mandybeez at gmail)