IIS 6 (I just concern with IIS because I'm using it :P) allows us to create sub web applications for sub folders of a web application. I.e. we can create a virtual folder/web site for a Web Application, right click on one sub folder of it -> properties -> Create sub application.
What is this feature used for? Is it run in the same AppDomain with its parent?
Web Application here means ASPNET 2.0 application.