1. Thou shalt not abuse Flash.
Adobe's (ADBE) popular Web animation technology powers everything from the much-vaunted Nike (NKE) Plus Web site for running diehards to many humdrum banner advertisements. But the technology can easily be abused—excessive, extemporaneous animations confuse usability and bog down users' Web browsers.
2. Thou shalt not hide content.
Advertisements may be necessary for a site's continued existence, but usability researchers say pop-ups an…