Announcing SPDisposeCheck tool for SharePoint Developers
Quote: Microsoft wants to help developers build better quality code that manages available memory better.
Source: http://blogs.msdn.com/sharepoint/archive/2008/11/12/announcing-spdisposecheck-tool-for-sharepoint-developers.aspx
References:
Best Practices: Using Disposable Windows SharePoint Services Objects
Best Practices: Common Coding Issues When Using the SharePoint Object Model