SurveyMonkey, the developer of online web survey software which has offices in Portland, said this week that it has launched a new, Facebook Survey application. According to the company, the new app allows its customers to add a survey directly to their Facebook page. The app allows Facebook Page owners to poll visitors on any number of subjects, which can then be analyzed for information. SurveyMonkey said the app works with any of its plans, including the free version of its service.