My laptop was on the fritz two weeks ago and I was forced to use the Google Gmail BlackBerry application to manage my emails and archive them. I was getting really frustrated with using the menu every time I selected archive and having to confirm the popup box. I then did a little searching and found that there are actually keyboard shortcuts for full keyboard QWERTY BlackBerrys! The best part is that they do not require confirmation. Just one click and you are done.
The keyboard shortcuts can be found easily in the Google Gmail application by firing up the application and clicking Menu->Help. They can also be found in the images below: