Find out where shortened URLs lead to without clicking
http://www.17cats.com/newblog/post/210b543c/?t=LybFfggNWbhAr1Vc&aim=DvFcNGcEVEBxbnDx&utm=guang5
http://www.17cats.com/newblog/post/210b543c/?t=LybFfggNWbhAr1Vc&aim=DvFcNGcEVEBxbnDx&utm=guang5