It’s easy enough to be cavalier and say, “People shouldn’t use IE, and if they do, — ‘em. They can upgrade, or they can see a site that doesn’t look as good.”

But in the real world, clients expect backwards compatibility…especially those still using IE6 and 7.

Good list otherwise.

1. For item #8, it’s usually easier these days to start with your styles in a separate file, because you can generally get a split view in your editor of choice with the css file in one pane and the markup in the editor (and a browser waiting to refresh in the other monitor).

2. Don’t overuse the div tag. Just because it has no default visual appearance doesn’t mean it has no default meaning in a document. Use it to create appropriate logical sections(division), and only elsewhere when absolutely needed.