Found this article - you guessed it! - on Twitter:
Many folks outside of the immediate SF-Bay Area or outside of the technology industry may not know much or have ever heard of Guy Kawasaki. He's long been one of the many faces of Silicon Valley and Web 2.0. Another blog post he wrote gives some great tips on picking up followers on Twitter:
His writing is mostly industry agnostic, which is great for easily finding applications in the Real Estate industry.