Comment 1 for bug 499506

great catch.

Theres an interesting reason for this. It was supposed to fill in the user's language, but for anonymous users there was no language.

It should have been http://creativecommons.org/licenses/by-sa/3.0/deed.en (or what ever the user's language was) but there was none. Apparently anonymous does not have a language or maybe theres something browser specific.

I could make it so it removes the dot for anonymous users.

I think its best just to leave out the language specification. I think creative commons auto detects the language, but I don't know.

Either way, we have a different set of languages than creative commons so it could fill in a language that goes to 404 anyway.