Working at Mifflintech Enterprises- we have org charts for every department. Heck I am surprised we do not have an Org chart for our own cubicle- telling the items in our cube where they stand. Phone you are above the stapler. Of course Org charts are great - it lets you know who you report to and and provides a chain of command. It is also great if you are the one looking down in the Org Chart. However if you are the person at the bottom and you are the one looking up - it doesn't mean much.
I think the Totem Pole was the 1st org chart, except it was displayed as a statue for all to see instead of in a shared drive on your computer network.