MSN Web Search API
At PDC05 Seth Demsey gave a great talk about the new Web Service API for MSN Search.
You can get started by going to http://search.msn.com/developer to sign up for an AppID (takes 10 seconds) and download the SDK. The AppID is basically a GUID that identifies your app and allows that AppID to perform 10000 searches per day. The SDK provides documentation and samples on the Web Search API. You can find the WSDL for the service at: http://soap.search.msn.com/webservices.asmx?wsdl
-jhawk
