The familiar brain wave was patented on September 7, 1999 by David J. Blumberg and DoYouDo chief executive officer Gil S. Sudai, but several 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 several potential flaws in traditional courtship and in conventional dating systems in which strangers meet online, promoting anonymous matching of friends and acquaintances as a preferred alternative.

Missionary dating is a phrase hand-me-down in a Christian context to call when a cat Korean Dating of odd religious persuasion dates a person with differing beliefs for the direction of converting him or her. Synonymous phrases include "dating for Jesus" or "flirt to convert". The big idea of missionary dating is sometimes acclimated to justify or rationalize to one's self, family, or religious community, exotic attentiveness in a non-believer, if the relationship might be frowned on otherwise.