Developer Network
No matter you are crawling in sap, sun or yahoo network.
We are crawling and building new kind of network over the world.
Comparing to SAP sdn, yahoo dev network has much more indy Apps.
The Map API for beta is really interesting. Especially,the map for the Flickr. I love Flickr!!
For those who are familiar with Google, you may try this. It's very easy Map Builder Tool.