ABSTRACT THE EFFECT OF TRAVELOKA SALES PROMOTION ON TWITTER @TRAVELOKA ON THE DECISION TO USE PAYLATER By: Ratna Masytah Advisor: Evawani Elysa Lubis, M. Si Advances in technology are so rapid that the trend of e-commerce users in Indonesia has grown quite large in recent years. One of the strong candidates in e-commerce competition in Indonesia in the field of travel agencies is Traveloka…