Yahoo! Developer network

Just came across this for Yahoo DN! Looks like a good start for creating custom Yahoo! applications. I also read recently that Yahoo! is getting more open with the YDN (that's what I'm calling it, don't know if they do) and publishing APIs to various applications (a la Google). This should be good opportunity for developers to look into learning more about web services and publish Patterns, as the link above does!

Wonder when they will release the Calendar API!