mashable.com - Twitter has succeeded in attracting marketers to the social network, but it still has a lot of work left to appease marketers as it prepares to become a public company.The majority of large marketers (60%) now use Twitter for various business objectives, putting it ahead of competitors like LinkedIn and YouTube and second only to Facebook , according to a survey of 395 marketers in the United States, the UK and Canada by Forrester Research.