Dreamstime, founded in Romania and now headquartered in Tennessee, has given contributors data on recurring keywords used by image buyers. Through a new feature called "Words that Work," Dreamstime shows the keywords used to begin searches that resulted in image purchases. The company said it will allow contributing photographers to keyword images according to buyer preferences, instead of using terms insular to the photo industry. In addition, Dreamstime contributors can now access the history of themes and images downloaded through the micro-payment Web site.