Less than a year after joining Twitter as its first director of search, Doug Cook is leaving the company, the company tells TechCrunch. TechCrunch says Cook’s departure is related to an internal restructuring of the company’s search team — but it’s not clear what drove it. A spokeswoman confirms the departure to us and says Twitter is “investing even more on search and have created new teams to focus our efforts on inference, discovery and real-time search infrastructure.”
Since Cook joined, Twitter has begun to rank top search results by how often a tweet is retweeted, instead of just by when the message was sent — a huge improvement (And, of course, Twitter has added ads to its search results). A rumored very ambitious plan to have Twitter index not only the text of tweets but also the pages that tweets link to has not materialized, however.