Facebook Scraper ,a software to search and extract unique user ID's from facebook pages(Exports ID's of people who have liked pages,commented or liked page posts),groups, posts and events to a CSV file and convert it to Facebook Emails.You can import Emails CSV easily to facebook power editor to get custom audience. This is a free version of Facebook Scrape. To get the commercial version, please visit: http://www.botguruz.com/products/facebook-data-extractor/