Whether you like it or not, Twitter is changing the way people communicate, and digital media and technology companies are eager to harness this new tool. Every week, we’ll look at a different Twitterer from the media, entertainment or technology world to see how adept he or she is with this emerging medium.

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Name: Padmasree Warrior twitter.com/padmasree
Affiliation: CTO of Cisco
Following/follower ratio: Follows just 72 people—has over 781,000 followers.
Average number of tweets per day: About 12.

Is there a real, public conversation? Absolutely. Though Warrior is following a tiny fraction of the people that follow her (and the people she follows tend to be public figures like Google’s top search cop Matt Cutts or Lotus founder Mitch Kapor), she’s constantly engaging her followers with questions, retweets and smart replies—proof that she’s actually reading their tweets and pondering how to respond.