Oh, I forgot about that. It is live, but perhaps not fully public yet. He mentioned the password in a previous post.

Here's another view of the same graph with rounder numbers along the x-axis. This picture paints a more accurate picture of his exchange rate. You'll notice that the spread (the difference between the red and green line) is quite reasonable until either bitcoins or euros are scarce, at which point it adjusts quickly. The spread gets quite large when you go much higher than about 2 Euro. I'm suddenly liking his exchange rate calculation a lot less. Buyer beware!