What does it do?
For every link on a web page that contains in-link URIs (e.g. "http://foo.com/?u=example.com"), an anchor (link) element which refers to the contained URI is created and inserted just after the original link. The previous version of this script popped-up a div element instead of inserting a link.

What's the point?
Many web pages have links which either redirect you to another URL, or embeds the target page in their own frame. There may be several reasons to go directly to the target URL; avoiding ugly frames with ads, not wanting to contribute to the statistics, or lowering load times. Even worse is that some pages only deliver the target page with a certain probability.

Works well for e.g. google images. (Gives direct links to original image and the page the image is on).