Yesterday I wrote a quick post on Google Co-op and Windows Live Search Macros and i thought that I should provide you with two great samples.
Lawrence Liu has set up a custom search on Windows Live Search called SharePoint Community Search. The search focuses on SharePoint related sites and blogs.
Gavin Joyce, the man behind DotNetKicks.com, has created a .NET Search Engine using Google Co-op. Gavin invites everyone to contribute with .NET releated sites that should be in the search scope.