It was only a matter of time before the Internet started to monetize humiliation. In this case, the time was early 2011, when mug-shot Web sites started popping up to turn the most embarrassing photograph of anyone’s life into cash. The sites are perfectly legal, and they get financial oxygen the same way as other online businesses — through credit card companies and PayPal. Some states, though, are looking for ways to curb them. The governor of Oregon signed a bill this summer that gives such sites 30 days to take down the image, free of charge, of anyone who can prove that he or she was exonerated or whose record has been expunged. Georgia passed a similar law in May. Utah prohibits county sheriffs from giving out booking photographs to a site that will charge to delete them.