Hi Alex that's a great idea.
Could this be made into a permanent fixture to the IIS website by the Mods (the least being a thread marked to be always at the top), or something of "article" status except that everyone can add to it?
Excuse my ignorance, but is there a Southern constellation that makes it really simple to give an estimate of transparency/sky darkness, where a certain number of stars seen corresponds to a rough level of sky quality? This would allow the not-so experienced stargazers to contribute if they find what they think might be a good spot - without even needing a telescope. In the Northern hemisphere, that constellation is Ursa Minor and it works reasonably well. But it's obviously not an option here...