We're sure there's some scientific study that can prove the average person's attention span is decreasing more and more each year. But then again, we don't have the time to Google those stats. The micro-blogging site Twitter may be proof that constant updates and short bursts of information are the future of communication. Although you may not care what everyone you've ever met is doing at any given moment, some of our favorite musicians have started using Twitter as an invaluable tool to let fans into their minds. We've got our favorites, and we're gonna stick to 140 characters when describing them.