want to know how to use some of the windows live services? announced at the partner conference this week, some beta windows live quickapps have been released. these provide out-of-box implementations for certain scenarios and take advantage of live services like expo, spaces, silverlight streaming, virtual earth, etc.
and all source code is provided! there are two of them available now, but more to come according to the site. i downloaded the bike one, unzipped it and ran it right away...it was simple to set up.
check them out here and download them at codeplex (with the source).