From http://www.shup.com/:
Shup is a free multi-host file uploading, image editing, and collaboration tool for Windows. With it, you can quickly share your screenshots, images, and other files by turning them into web links.
Not only can Shup upload many kinds of files, it can also upload to many different hosts:
I’ve tried it and I’m finding it to be a remarkably fast way of taking a screenshot and uploading it to Flickr.
Thanks for the shoutout! =) Any comments / bug / suggestions?