Twitter to revamp search experience Pankaj Gupta, an engineering manager who heads up the recommendation and personalisation systems at Twitter, teased his followers on the site tweeting: "Search & discovery in @twitter set to change forever after tmrw [tomorrow]. Team - congratulations and enjoy the enormity of your impact few understand today! Twitter introduced a "discover" section at the end of last year during an overhaul of the site in a bid to try and serve people relevant content from the network based on a user's interests. It is still quite US-centric and at an early stage in its development. The microblogging service now has more than 140 million active users who post more than one billion tweets every three days. Search has become an increasingly crucial part of Twitter and a service the site has been rapidly developing to make it as useful as possible. It also needs to get better at helping people find relevant and engaging content. Technology pundits have predicted the site could make its content discovery system look a lot more like Flipboard, the popular social magazine app. Over the last 12 months, the company has been improving how much rich media each tweet can contain and the best ways of displaying it. For instance, readers of participating newspapers can now show articles" headlines and standfirsts within the body of their tweet.