[Haskell-cafe] Haskell Logo

I wondered if anyone knew the legalities of using the haskell logo, in particular, this one: http://media.nokrev.com/junk/haskell-logos/logo1.png on a website, a personal blog in particular. While I am not yet a primarily haskell coder, I'm using it more and more. I find this logo in particular to be quite beautiful and would probably modify it a bit to emphasize the lambda, which has broader application to computer science beyond 1 language. I can't find any information on what the license is for this image. Could anyone offer any advice on this? -- Michael Xavier http://www.michaelxavier.net