The power drain from Hangouts/Chrome is astounding. I admit it's convienent but native does have its benefits it you need a lot of video conferencing (like all day pairing)

Adobe connect allows participants on desktop to enter in the browser without software downloads aswell (http://www.adobe.com/products/adobeconnect/meetings.html).It's expensive though. Anyone know any more inexpensive options that work natively in the browser? Would be nice to get a little list going.

Hangouts requires a proprietary plugin in Firefox on Linux. I'll use it for work, on my work computer, but I'll never use it on my personal computers for that reason.

appear.in

appear.in requires a plugin for screen sharing but otherwise, I do like it.

The plugin is dummy, required by chrome and just gives permission to share screen. Appear.in has been whitelisted on firefox and requires no plugins there.