The 5 Olympic rings

If this has been answered already, please direct me to the thread.
I’m wondering if there’s any significance to the 5 interlocking rings. I’m guessing it has something to do with an original format of 5 city-states but would like to know for sure.

Lots of pop-ups, but this will answer your question.

http://www.hickoksports.com/history/olringsflag.shtml

From a week and a half ago: http://boards.straightdope.com/sdmb/showthread.php?t=271354