I'm involved in a project that may well be interesting to people here with Sky Quality Meters. it's called MyDarkSky and it is completely free and none profit making.
We currently have a handful of dedicated users armed with Unihedron Sky Quality Meters and we're are surveying sky quality in as many places as we can get to. Our aim is to find the darkest sites for observation but also highlight light pollution hotspots.
If anybody here owns an SQM and would be interested in submitting some data please register and join in.
If you don't own an SQM but would like to be involved anyway we also have a method of assessing the Naked Eye Limiting Magnitude and users can add data that way.
Currently the maps are a little sparse but new Data is being added all the time. Most of our data is in the UK but I'd love to see readings added globally.
It's a free website created by amateur astronomers for amateur astronomers and the more users we have the better it will be for everybody.
Please take a look and let me know what you think.
MyDarkSky