If you do not have the technical expertise (or the brains to find someone who does) to configure your web server so that it is not necessary to type a "www" prefix when going to a domain name, you should not have a website. Period.

Even more amazing are the number of Fortune 500 companies that constantly neglect these few lines of code and possibly deter customers or at least make asses of themselves. For example, several years ago I notified the so-called webmaster of the Crown Royal Whiskey Company that their print advertising displayed their domain name sans the old school prefix and was, in fact, inaccessible that way. I never received a reply to my generous observation but the problem was corrected rather swiftly.

Oh and Flash-only websites suck. Forcing your end-users (read: moneymakers) to comply to your strict requirements is illogical. Flash is an interesting technology with many practical applications but at least give me the option to skip the annoying animated buttons, splash screens, introduction pages and noisy transition effects by suppling an HTML version as well. No, actually do not even bother. Your site probably contains nothing useful anyway.