• The general concept was patented on September 7, 1999 by David J

• Blumberg and DoYouDo chief executive officer Gil S
• Sudai, but not many websites were already employing the methodology by that date, and thus apparently were allowed to continue using it
• United States Patent 5,950,200 points out disparate potential flaws in traditional courtship Minneapolis Dating and in conventional dating systems in which strangers meet online, promoting anonymous matching of friends and acquaintances as a finer alternative.

New Jersey became the first state to enact a code requiring the sites to disclose whether they perform background checks.