I think it's more a matter of making whatever you want work for you, regardless of what type of relationship it is.
I don't know if I'd be comfortable in what most see as an "open relationship", not that I've ever tried it though. I do like the concept of no ownership or control issues, as well as doing away with jealousy for the most part, and communicating more openly about everything.
It's too bad so many people can't get over these hurdles, even in a monogamous relationship.
RE: Anyone Remember Nuala/Noodles from here
Thanks N, I'll take another if you don't mind, it's going down to 30 below again tonight, and I don't get many hugs these days.