redirect output of charm to /dev/null
redirect output of charm to /dev/null

Charm prints "Posted" on STDOUT (not STDERR).  Now that we're locating
the last post to put its url into the Posted: line, the extraneous
newline messes up the sed command that inserts it.  Ugh.

ssavitzky/Honu,ssavitzky/Honu,ssavitzky/Honu