Good article on UINavigationController

Explains the basics well, and suggests how to use it programatically.

http://www.shrinkrays.net/articles/monotouch-controllers-by-example/uinavigationcontroller-by-example.aspx

Important ASP.Net tip on "deleting" from a link

http://stephenwalther.com/blog/archive/2009/01/21/asp.net-mvc-tip-46-ndash-donrsquot-use-delete-links-because.aspx

Drag and drop to upload a file in web HTML5

http://www.thebuzzmedia.com/html5-drag-and-drop-and-file-api-tutorial/