Don't Read This Article
Please don't read this trash masquerading as usability advice.
Here are a few tips for the author:
1) Actually know something about the topic you're writing about.
2) Follow your own advice: "If your site [or article] has too much content ensure readability" ... and accuracy, and validity, and clarity, etc., etc., etc. Oh, and if you have to much content...maybe you have too much content.
3) Follow your own advice: "Test for spelling mistakes and grammatical errors." Try using a proofreader.
4) Follow your own advice: Add a sitemap, strategic links, and some XP style icons - I'm sure that will make your article much better.
5) Learn what usability is - if you don't recognize that different sites have different users with different needs, then you'll continue to speak about usability incorrectly and offer ineffective platitudes and generalities that perpetuate unusable web sites. What you're advocating is that people waste a lot of time and money on activities that do little or nothing to make their web site more effective.
People have much better alternatives if they want truly effective tips for designing usable web sites.