Facebook no longer supports sharing by passing custom parameters into sharer.php. See this StackOverflow answer for details: http://stackoverflow.com/a/22969530/1154642 Instead, the title/description (etc.) information needs to be present on the page in the form of an Open Graph metatag. Other modules (like metatag or metatags_quick) already exist for placing open graph metatags on the page. For this module, the share link itself will need to be reworked to use Facebook's Share Dialog API.