Here is an idea: A commonly overlooked issue occurs with images. No matter how small the image is, ALWAYS set the width and height attributes of that image. This has two benifits. First off, some browsers won't even render the rest of the page until it knows the dimensions of an image. For the rest of the browsers that do render the page, when that image finally loads it will shift content when it knows the size of the image. Nothing is worse (to me) than reading something and having the content shift while in the middle of the line. You want your site to load as a framework that fills in as it loads (ideally it should load almost instantly).
