"Windows Live SDK
The Windows Live™ Platform puts a deeper level of control into developers' hands by offering access to the core services and data through open, easily accessible APIs. Now you can build applications and mashups that combine your innovation with the power of Windows Live services and social relationships.
Visit http://dev.live.com to learn more about other services and developer offerings from Windows Live.
Windows Live Services
The following software development kits and application programming interfaces are available to Windows Live developers:
Windows Live™ Search Web Service API - The Windows Live™ Search Web Service is an Extensible Markup Language (XML) Web service with a SOAP API. The Search Web Service enables you to submit queries to and return results from the Windows Live Search Engine....
I've been thinking of tweaking my WLW Related Post Plug to also allow the searching of the given blog for posts that have rotated off their feed.
Since Google's SOAP search is effectively dead, I'm now going to be looking to Live and/or Yahoo...