I get my information from the CRTC site (mostly "releases"), the FCC site (huge, complex resource there), my own personal reception experience, information given to me by other viewers, those "in the know" and, now and again, station engineers.

The map is plotted using Microsoft MapPoint.

If you can create the page(s) with the information you want on it, I'd be happy to host it.

And thanks for the comments guys! I've been off in Denver at CEDIA for the past week, but I'm looking forward to getting back and seeing if I can finally catch WNYO on the air... :-)