Re: vodkafan's post
... a polycule can steadily accumulate more partners, and some intimate networks are quite complex. But I don't know whether those networks formed by a process of gradual accumulation, maybe they mostly formed all at once. In any case, it's not necessarily true that poly groups tend to grow larger and larger. Quite a few stay at three (maybe four) adults pretty much for life.
In fact it can go the other way. Many poly groups shed members here and there, as people change and compatibility consequently changes. It's rather common, for instance, for a group to start out as a quad, then shed a member and turn into a triad or a V.
I don't think you could assign a number to the title "Most Poly Partners Allowed." Everyone is different, and different people have different ranges of how much quality time they want to put into each relationship. Heck some people need less sleep than others. I think "two partners" is a very common limit for a lot of people; yet I know of many poly tangles with 7-10+ adults, often with kids.
In short, the answer to, "How many is too many?" depends entirely on who you ask.