That's like the wonderful sting the Gardai once sprung in Eire.
It seems that a huge number of pirated satellite viewing cards were in circulation. So the Gardai arranged a short commercial, promising all sorts of goodies to anyone who turned up at some hotel on a particular night.....
.....which could only be seen by someone with a pirated card.
Lots of people turned up and all were prosecuted....RESULT!
I'd do the same for people who use illegal music downloads. Offer an unlimited download software product for £4.99. Which, after 24 hours, reports the computer IP to the rozzers, then reformats the hard drive. Take advantage of greed and use it to your advantage.
Seriously, if the Spams used their other neurone, they could have all sorts of fun confusing the stone age religious zealots with time delayed video.
One of the best comms jamming tricks I ever heard was a recording of the same circuit made a few hours earlier - confused the heck out of everyone!