Since going public last month, has launched several features to grab the attention of marketing professionals. It seems that this work is starting to pay off. Social network shares are higher than ever since the first day of social networking on the NYSE. This Monday, the Twitter action rose 9.3% and ended the day at 49.14 dollars. This figure has not been reached since the first day of trading, when its action had jumped from 26 to 50.09 dollars before finishing at 44.90. In the past few weeks, the action has remained around $ 40 overall. Press on earnings One of the reasons for this investor optimism could be the release of one of the new features on Twitter. Last Thursday, the social network announced tailor-made targeting of the audience based on navigation data. It is a system made to help companies target potential customers who have expressed their interest in a brand in the past. Besides targeted audiences, Twitter also announced a tool for targeting conversations around current TV shows, a technique for using Twitter from a phonewithout the Internet, and a number of tools to make it easier for marketers to reach mobile users. Twitter still doesn't have the start of a profit, which puts it obviously the pressure: it must create sources of income to meet the expectations of its investors. Exiting ad functionality is one way to bring value to marketers, and turn it into their own revenue.