Content is really the most important thing, but it sort of isn't fair to the other elements to have it in a poll. Clearly, if your website loads fast, looks good, and uses universal HTML, but has no content it's useless. Unfortunatly I've noticed that a lot of robotics sites tend to take forever to load, and/or need plugins to work. Our current beta design's barebones (navigation, structure, no content) total at 23K and are useable in anything from Netscape/IE 2 1024x768 on up. This reflects my opinions on web design, although it won't win any design awards, it is as useable as websites come. My favorite web design rule of thumb is , as Mr. Flanders
says, if Amazon.com doesn't use it then why would you?