Yahoo Developer Network… whoa
Over the last couple years its been all about Google with its open API's its received a lot of love from developers. Mashup were everywhere. And with its IPO and stock prices soaring google seemed unstoppable. Both Microsoft, with its live.com work, and Yahoo, with its many acquisitions, have been playing catchup.
I've just gone through the Yahoo Developer Network… its really good. Everything is open. And its not just server side API's they've released a very nice looking javascript and CSS UI library. Google has great UI's but has failed to release these to developers. Yahoo is cool again.