Results from the Great Radiohead Experiment of Ought-Seven are out, and they don't look particularly good. Radiohead, you'll remember, offered their new CD, In Rainbows, as an online download, and let fans choose what they'd pay. And 62 percent of the downloaders paid...nothing at all. Now, maybe the 38% who did pay was still larger than the 100 percent who would have bought the album, and when you factor in the absence of overhead, Radiohead did better than traditional distribution channels would have allowed. But I wouldn't bet on it.