2014-07-04 ■ facebook callback http://stackoverflow.com/questions/4980061/twitter-and-facebook-share-with-callbacks http://liginc.co.jp/web/service/facebook/35972 http://facebook-docs.oklahome.net/archives/52070227.html twitter callback http://d.hatena.ne.jp/speg03/20091019/1255957580 http://shiba-yan.hatenablog.jp/entry/20130418/1366272125