Ask HN: anyone playing with the Yahoo Fantasy Sports API?

Yahoo! recently launched an API for their fantasy sports games. http://developer.yahoo.com/fantasysports/ Has anyone played around with it? It currently restricts development for non-commercial use, but I think there are numerous opportunities to create products that leverage this software for the fantasy community. The fantasy sports community might be one of the least tapped on the internet, because up until now all software was developed by the giants - ESPN, Yahoo, CBS, NFL. And for the most part, they've taken their users for granted. The interfaces are simple but lack innovation. Yahoo's API really opens doors for a lot of opportunities. A few numbers: - there are 30 million fantasy players in the US and Canada - the average household income of a fantasy player is $92,750 - estimated as a $3 to $4 billion industry (http://www.businessweek.com/print/magazine/content/10_38/b4195081511463.htm) So - is anyone playing with the Yahoo API?