I think, given the history of the conduct of the pro-Walker ilk, that the first bunch of people who band together because of the inevitable harassment that will come from the aforementioned ilk, should make for a pretty good class action lawsuit.
When these open record laws were enacted, no one had even imagined the possibilities of an internet.
Then, on the other hand, you will find, on occassion, some worm pop up from under a rock, the kind that supports WikiLeaks, and argue for the release of these record.
I think it should be treated much like voting. Private.
It should be interesting to see how the Madison rightwing plays this one out. They better get on the side of the people or they will be in a world of hurt. The best thing Scott Walker could do right now is to fight tooth and nail for the privacy of his political foes.