http://i.imgur.com/GJo36X3.jpg
This thread went south fairly quickly. People have their preferences no need to be all butthurt over it.
I feel that unless you're confident 100% with what you're doing in the content you're participating in or deaf (more common than you think) you should at least have ventrilo/mumble on and listen in for orders & notifications.
I however don't feel it's necessary for you to ALWAYS be on voice when you're logged in. I don't feel that it's necessary to be on voice just to be invited for content if you're on stand-by or just gathering/crafting to pass time.
