Skitch 
Public Beta! Create an account and use it right away:
http://skitch.com/signup
Everyday we all share images, ideas and have fun with friends online - this should be easy... right!?
With an innovation packed user interface and the mySkitch webservice to instantly upload your images, Skitch cuts out all those tedious and tricky middle steps. Get your images where you want them to be, on the web with a single click or drag and drop to any application.
mattding
