Find out where shortened URLs lead to without clicking
http://www.17cats.com/newblog/tags/%E4%B8%AD%E4%B9%8C/?avg=703289&cox=0.21469781535515808&utm=guang5
http://www.17cats.com/newblog/tags/%E4%B8%AD%E4%B9%8C/?avg=703289&cox=0.21469781535515808&utm=guang5