ImageShack® - Uploader for your free image hosting needs:
The Imageshack Bulk Uploader is a simple standalone application for uploading one or more image and video files to Imageshack. Users can upload to their account or anonymously. Windows haters can rejoice: Version 2.2.0 is a cross-platform tool, supporting Windows, Mac, and Linux.It works in Snow Leopard... Logs you in almost instantaneously when you launch it, uploads quickly via drag 'n' drop, and shows you thumbnails before and after upload.
I don't upload to Imageshack, but i have viewed and downloaded files from there... and i think they enforce a per/file size restriction or something.
Anyway, reading that post made me realize that we haven't included Dropbox here (great for images and much much much much more):
Dropbox -
https://www.dropbox.com/
