There's another case to be considered here, too - people who have used the site, got caught/came clean, did the work to fix it and have rescued their marriages (or were doing it with the blessing of their spouse), and now are at risk for their name being published for viewing by their coworkers, neighbors, members of their church, etc as a "cheater", "adulterer", etc, even after they've ostensibly paid their moral debt.
There are certainly a lot of karma coming to a lot of people who deserve it, but there's also a lot of hurt coming to people who probably don't.
An unrelated thought: I can only imagine how giddy the staff over at Gawker must be right now. This is like the David Geithner story times 37 million.