On the other hand ~ has been used to indicate a signature.
A trailing colon would be the obvious choice when addressing a statement to someone, but that doesn't work as well for the Twitteresque usage of flagging a username embedded in the middle of a string in a machine-readable fashion.
A trailing colon would be the obvious choice when addressing a statement to someone, but that doesn't work as well for the Twitteresque usage of flagging a username embedded in the middle of a string in a machine-readable fashion.