I think he meant (based on the title) that your contacts would set YOUR dp by typing whatever.
I would do this if it was a request, but since you're wanting to do it, I'll let you get on with it.
BTW, I would show a confirmation message for each attempted set... you tell people they can make your DP say what they like, the first thing many of them will type will be something like !setdp I'm a big homo!
/ –
