1Up is a project mainly written in Ruby, it's free.
image sharing script on steroids
version: v0.2 by: Sven Sporer
This little script helps you share your pictures by doing the following:
The scripts works fine if you call it from commandline, but really shines if you define it as a Service for image files. This way you can start it from any place Services are available (Finder, iPhoto, ...).
/path/to/script/1up/1up.rb "$@"
I use the script in combination with Quicksilver and its Services Menu Module, which converts services to Quicksilver actions. Now, I can load an image (get current selection), hit TAB, and choose the 1Up service we defined earlier. Sweet.