I was pointed at this from an unapproved submission over at Plastic, its a column about a polyamory relationship. I was amused by the comment "How often does monogamy work?" in particular. Other recent discussions with my tribe have brought up the concept that most relationships can only last so long... a period of time often shorter than "til death do us part", for instance. This article does bring up some good points, though, about the difficulties of managing a relationship with more than two parties. It makes one wonder how the hell line marriages and the other shenanigans in Heinlein's Science Fiction would ever work... but maybe that's the fantastical part.