This chart came with an article in VoIP Weekly about Yoomba, the newest voice app that is browser based. This chart is alien to me for 2 reasons: on one extreme 10% or more get zero email and less than 10% get more than 50 email. I can't imagine someone not getting spam daily and my email inboxes overflow daily. Even if you discount listserv and news alert traffic, just 50 emails?! Eye opening.
BTW, I tried Yoomba when Gary Kim invited me. Nice. There is a widget download and it takes over your desktop - email client, IM and browser so that you can Yoomba a call to anyone with a click. (They just need to have an email address - no phone number, just email, a browser and a headset for the PC).