What would you do if you got a PM from an annomous person telling you that there was going to be a Jokers mission inbound to such and such place?
well, acting on information given to should be seen as bad as the dork giving it to you. Spies wouldn't exist, if they didn't think they were doing something that others would appreciate. By acting on it, you only encourage the behavior, and are just as much a part of the whole spy issue. Of course then someone will say "if I don't use, someone else will," thats fine, at least you have removed yourself from the issue, and are no longer part of it.