Minus is a brand new sharing site started in October 13th, 2010. It helps you share pictures(docs, music, videos and other files coming soon!) online easily. With only 3 steps ( drag your pictures onto its page; click to start upload; get the image link ) , then you can share with others, there's no need to sign up to use this nice service.
Minus supports most common image formats like GIF, JPG, JPEG, PNG, APNG, BMP. Single picture is limited to 7MB, and 50 pictures could be uploaded once. You can store your images forever as long as you don't violate the terms of service.
See the demo pic ;)
Note: Minus is optimized for Firefox , Chrome , Safari on Mac , and IE 9.