I like this tool so far! I do have one quick suggestion, if fairly easy to implement...
If one goes to http://www.waze.com/livemap
(not secure), put a red instead of green box at the top, and if you look up there, say 'LMUR doesn't work on a non-secure connection. _click here_ for the secure page.' In other words, @include both URLs, but do an if in there somewhere, early, to avoid this common user error?
May not be realistic, but it came to mind!
AM in SW Shasta, NW Tehama, Central Trinity Counties, CA; Mt Rainier Nat'l Park, WA