In person, Bush is a fast and furious talker, and although his tweets are not all that frequent, they ooze personality.
As CEO of a cloud-based EHR company, Bush tweets about the promise of technology in healthcare. But he also tweets promos to his book and his blogs on athenahealth and LinkedIn.
Still, he regularly highlights content from a wide variety of sources, thereby paying homage to another key rule on Twitter: It's not just about you and your content.
And this leads to humorous and intriguing tweets like this one about a competitor:
Bush also regularly engages with a wide variety of people. Here is a laugh-worthy exchange.
In essence, Bush embodies some of the best attributes of a good Twitter presence. He shows his personality and his interests readily and engages others on Twitter.