Mesg y on a single console

Mesg y might be annoying blinking on all your consoles. Here's what
i have in my ~/.profile:

mesg y
mecount=$[$(who -T | grep $LOGNAME | grep + | wc -l)]
if [ "$mecount" !=  "1" ]; then
  mesg n
fi

or shorter:

mesg y
[ `who -T |grep "$LOGNAME\ *+" |wc -l` -ge 1 ] && mesg n