Read the note at the top of the CS2D link page. I don't want to care about these links anymore because it's annoying like hell to receive add/remove requests all the time. Therefore I put them on a Wiki page so everyone can edit them.
If you note that a link is offline for several days and doesn't seem to come back online then you can simply remove it (even if you were not the person who added it)! And/or you contact the owner of the website and thell him about the problem (if you know who that is. You should see it in the Wiki change log though)
Edit: Ooops, didn't see that the link actually was hardcoded on the page. I need to fix this thanks