Find out where shortened URLs lead to without clicking
http://www.17cats.com/newblog/post/a8263c9a/?nex=hmcDKAodXFIMZD74&ts=GoN3KMu1KGB3EmeW&utm=guang5
http://www.17cats.com/newblog/post/a8263c9a/?nex=hmcDKAodXFIMZD74&ts=GoN3KMu1KGB3EmeW&utm=guang5