>If you have an (ASP.NET) application running in a subfolder of a site, do you create a BIN in the sub-folder? Or all .DLLs go into the same (root) BIN folder?
>
>Example:
>Site name: MyApplication Pages: MainPage.aspx, Page1.aspx, Page2.aspx and so on
>Subfolder: \MyApplication\AddOnApp Pages: AddOnMain.aspx, AddOnPage1.aspx, and so on.
>
>So in VS 2012 I would have two solutions (independent of each other) and each will produce a DLL (MyApplication.DLL which will go into the MyApplication\BIN folder. The second solution (AddOnApp) will create another DLL (AddOnApp.dll). Would I need to create BIN under the AddOnApp for this DLL or it will go in root DLL?

You can name folders about anything you like. Dino Esposito has an excellent article about this in the current issue of CODE Magazine.

http://www.codemag.com/Article/1405071