This one was sponsored by GoDaddy and was fairly recent. You can see the codes in the page's banner ad.

http://www.scottsigler.com/node/4133

I don't think the discount codes expire, however, so you're probably still good even for some of the older sponsors.

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Gutter Sistren whipping boy, innoventor of words, Life Coach to the Damned.

-- Death, chaos and mayhem, the music of the night