It works got mine today, I used the link on the 24th and the blade arrived today on the 30th. So it took 6 days all together. When you click the link it will open to the page and explain about the blade. In the center of the page is picture of the blade in use and above the pic it says, "click here to get your free blade", click on the words, "click here............" as if you click on the pic it does nothing. It will ask you about shipping info and who's blade you are using right now, and that is basically it.
I haven't tried the blade yet but it looks a bit more aggressive than the Lenox I am using as I think the Lenox is a slightly finer toothed blade but, hey it's free so we will see! Quantities are limited to what ever they set aside for this promotion!