Shell script that watches the desktop for screenshots (OSX default format) and then copies them to a remote using scp, leaving the URL available on the clipboard.

scpscreenshots.sh

#! /bin/bash

# change the paths on line 9 and 10 to match your specific configuration

/usr/local/bin/fswatch -0 ~/Desktop | while read -d "" event; \
do \
if [[ ${event} == ~/Desktop/Screen* ]] && [[ -e ${event} ]]; then
    newname=`cat /dev/urandom | env LC_CTYPE=C tr -dc 'a-zA-Z0-9' | head -c 16`
    scp "${event}" example.com:/var/www/files/screenshots/$newname.png > /dev/null
    echo -n "http://files.example.com/screenshots/$newname.png" | pbcopy
fi;
done

Thanks! See my fork for a variation of this. Screw CloudApp!