http://www.chakkaradeep.com/post/SharePoint-2010-Content-Type-Hubs-e28093-Publish-and-Subscribe-to-Content-Types.aspxhttp://dougonsharepoint.com/2010/01/28/content-type-hub/http://www.wictorwilen.se/Post/Plan-your-SharePoint-2010-Content-Type-Hub-carefully.aspxhttp://blogs.technet.com/speschka/archive/2009/10/30/publish-and-subscribe-to-content-types-in-sharePoint-2010.aspxhttp://technet.microsoft.com/en-us/library/ee519603(office.14).aspx
http://sharepoint.mindsharpblogs.com/Bill/archive/2010/01/23/The-Basics-on-Content-Type-Syndication-in-SharePoint-2010.aspx