How to cCheck Size of a share/folder?

Bumping this old thread just to indicate that there is still interest in having some sort of indicator, even if not very accurate. While I understand StephenB explanation, clearly there is a way to implement simple bar style indicator, as proved by the fact that it was done for full volume, and shows very nicely "data" -- as a bar, pie chart or numeric values. I am not certain why it was possible to do it for full volume, yet it is supposedly so difficult to have similar indicators next to each share/folder. This is pretty basic functionality - and is still sadly missing.