Google Search Q&A

What are the top 3-5 SEO areas where webmasters make the most mistakes?

According to Matt Cutts, head of Google's webspam team, webmasters make these mistakes:

• Website isn't crawlable.
• Lack of right words on Web page.
• Lack of compelling content and marketing.
• Lack of titles and descriptions in key Web pages.
• Don't use Webmaster resources.