new technologies:(Dependency injection,unity application block, mongodb)
http://www.mongodb.org/display/DOCS/Home
http://weblogs.asp.net/shijuvarghese/archive/2011/01/21/dependency-injection-in-asp-net-mvc-3-using-dependencyresolver-and-controlleractivator.aspx
http://www.codeproject.com/Articles/42524/A-basic-introduction-to-the-Unity-Application-Bloc