Can you link to the example? I've been interested in doing something like this, but as far as I can tell, you can only read messages using the Graph API; there's no method for sending messages.
multitail() {
com="tail -f "
for arg; do
IFS=':' read -a array <<< "$arg"
host="${array[0]}"
file="${array[1]}"
com="$com <(ssh -t $host 'tail -f $file')"
done
eval ${com}
}