And then there is the cssspit of short URL's
An invitation to go to somewhere that is undesirable and possibly illegal.
Remember just accidentally viewing kiddie porm is a criminal act here in the UK.
If it ain't on of these siate, how do you know the the short URL you just clicked on is not owned by a bad guy.
I won't click on any short URL's, QR Codes or anything else that hides the real desitnation of the connection.