Complete mess, what were they thinking...
And you cant just ignore the message. Its the sender controlling the content, so if they send you a msg with all that crap in, you have no choice.
I'm pretty sure I get to control the people sending me messages regularly. Luckily, as a personal choice, I don't generally deal with people who would abuse such things.
Really the same people who annoy you now will merely be annoying you in new and exciting ways.