That first "weak" link specified requirements for viewing the page. In general, you need "liquid" or "elastic" design for web pages so the content is accessible at any resolution. That page also insisted on a high-speed connection and on Flash. Not everyone has a high-speed connection, and not everyone uses Flash. And to be accessible to disabled people, which is the LAW in many countries worldwide, web sites that depend heavily on Flash have some weaknesses unless extra coding is put in for alternative ways of accessing the content.
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"When you ride over sharps, you get flats!"--The Bicycling Guitarist, May 13, 2008