This is pretty neat. Was listening to WRMI 9395 today at 7pm local NYC time - and heard a broadcast of local WNYC 93.9/820 "On The Media" and the host asked for listeners to send voice memos to onthemedia@wnyc.com describing where/how you're listening, why you listen to shortwave radio still and your listening habits.
Can't seem to find any info about this online but I made one and sent it off to that address anyway.