Thanks for the list, it will really help the newcomers!
I use imgsafe.org because it's fast and convenient to use without an account.
I came across a site that I was using and it turned out to give me broken links after a few hours of uploading an image. I do not recommend for people to use www.imgur.com or else you will find out that your link is dead after a few hours by someones smart-ass comment on your post. Haha cheers!