SharePoint 2010 Cumulative Update: October 2012 Description and Download here
SharePoint 2013 Search Query Tool released Nadeem Ishqair has released his Search Tool on Codeplex. It helps to debug security trimming issues and you can see how the different Query Parameters (on Search REST WebService) are formatted
SP2013: Improve navigation through search results using refiners based on custom entities Katja Krauss shows how to create search refiners if you dont have metadata but custom entities that you extract from the document content.
Todd Klindt`s Netcast 138 Todd talks about Viewer,SharePoint Manager and SQL Server Max Memory Settings