<human>: Summarize the given text in a few sentences.

I'm an American, and have been living in a very untypical household.  A few years ago, my best friend had an infant more or less dropped on his doorstep (not so literally).  We were all quite young at the time, and when that happened, he couldn't cope right away.  So myself and one other friend moved in to help.  Fast forward, we wound up sticking with that situation long after my friend had picked himself back up.  

With the daughter now 5 years old, she has been and continues to be raised by a total of 4 adults with a (mostly) evenly split responsibility (My best friend, me, our other friend, and in recent years my best friend's girlfriend has joined the mix).

As amazing as this has worked out for us, we've never come across another family living in the same or a similar way and I'd love to know if there were aspects of this that people handled differently to us.  For instance, when she started talking and naming people, there was a bit of initial worry about whether calling people "mom" and "dad" would start to be confusing.  She calls her bio father "dad" and the rest of us "aunt __" and "uncle __" but it could have easily wound up working out differently.  

I suppose I'm looking to hear stories, we were so young when we were thrust into this situation that we kind of just fumbled around and accidentally wound up not screwing it up (yet), so I'm wondering if anyone is in a similar situation but *planned* for it.
<bot>: Best friend was overwhelmed as a single father, which led to us raising the child in a tribe-like household.  Has anyone else ever done this or something similar?  What did you do?