Background – black background with white text, black background with dark text, small tiled images which do not link together to form a smooth background.
Text – centered text, overuse of bold text, flashing text is one of the most annoying features a site can have. This is a deal breaker.
Content – a page full of links or too many links, questionable or controversial content, wrong content or tricking the customer.
Media – too many images or icons, too much flash or video, embedded audio which automatically plays and has not mute.