Images

A small suggestion:
adding width and height to <img> tags.

Motivation:
While images are loading on a page, it continues to grow in length. This can make it tricky to scroll to the last post until all images have been loaded. Adding width and height allows the browser to calculate the complete page layout without loading all images first.

there is a way to do it using the BB code.  It requires entering in the size manually and may not show well on all machines.  

edit, I can't find the tutorial right now.  It's somewhere in the forums at coderanch.com