I'm talking about tens of thousands of people not individual cases. Pretty much every university, non-university research institution, and funding agency have active Twitter accounts. In my experience, most departments, and labs also have twitter accounts, not to speak of individual researchers. Jobs are found on Twitter, careers are made, new collaborations start there. I'm talking about tens of thousands of people who are highly active on a daily basis, whereas /u/kleiba was referring to himself and some unspecified coworkers which I interpret to be his lab mates.
