Bypassing Imageshack hotlinking restrictions.
We’ve all seen the Imageshack “Domain unregistered” image, this happens when the domain the image is hotlinked from isn’t registered with Imageshack, it’s bloody annoying, especially on forums. Luckily there’s an easy way to remove it and view the original image and you don’t even have to do it on a per site basis.
What happens when your browser loads a hotlinked image is that it send a string called the “Referrer URL” to imageshack which tells it where the image is hotlinked from, they check if the site is registered with them and returns another image if not. There’s a Firefox plugin called RefControl which allows you to specify the referrer URL on a per site basis, all you need to do is create a new rule for imageshack.us and set it to forge. That’s it, now every time you browser loads an imageshack image it will tell imageshack that it got the link directly from them and they’ll allow it. This is one of those usefull little hacks that you won’t know is working until it isn’t.