I've had this issue before and always kind of ignored it but it really seemed noticeable in this case. I upload images but find that they look different than the image on my computer. I have a link showing a comparison between the image on my computer and the image once it's been uploaded.
http://imageshack.us/photo/my-images/714/deerpics.png/
I've uploaded the image as .jpeg and .png but the same problem occurs. Does anyone else have this problem or know of a fix?