http://home.earthlink.net/~k7bfl/radinfo.html does a pretty good job at explaining ARRL radiograms, how to send them, what ARL codes are, priorities and wordcounts.

I just have one question, though. How are radiograms delivered? I mean, I know there isn’t a fixed method of delivery, but how are they typically delivered? Also, how much are radiograms used now days? Are they used mostly in emergencies, or is it a novelty?