Facebook API meets Pickdee

I wanted to post this a while ago, but never came to it. During the world cup this year we held a small competition at Pickdee. Gary from Pickdee mailed me last week with a nice new feature he implemented:
Gary from Pickdee here, hope you're enjoying the football. I just came across your post on pickdee [ after having being introduced to your blog from the pickdee post ] -- I also thought the facebook API opening up was an interesting event. It's definitely of a different nature than most of the other web API's. It let me build this: http://www.pickdee.com/facebook/ in pretty short order, it lets any facebook user use their login there to authenticate with pickdee and play one of the two new American Football games... Funny seeing your two posts together.
A lot of mashup kids like Gary (from Pickdee) and me (sometimes) clearly see the advantage of building further upon existing services. He plugs his system into facebook, he doesn't have to make a registration page, although he already made one now. The value of a facebook account goes up because you can use it in Pickdee. The web is evolving to a nice ecosystem, where every platform has its specific task and focuses on doing that specific task very good.