Apparently the issue the hackers had with the site was not so much the concept of 'adultery' as the idea of extortion to keep user's data private...and so they made it public anyway.
It seems you paid to join up...but to keep your details private you then had to pay them for the privilege.
So in the infinite wisdom of the hacker...why pay the site when the data could be hacked and uploaded thus preventing the site from being paid to keep it quiet.
Seems like any idiot who joined the site was fucked either way...