10 Fundamental SEO Errors
Jordan includes three domain errors in the mix. The first is misspelling the domain (a caution against buying domains over the phone, or not verifying with a client exactly how it should be spelled), and the second is buying anything other than a ".com" (like a ".biz" or ".org") if it's available. The third is letting a carefully chosen domain name expire.
Publishing site statistics, sensitive company information, or failing to monitor negative on-site reviews are counted as grave mistakes as well. In this era of transparency and social media, taking down any of this info after it has been up and linked to is likely a moot point -- so Jordan says to make sure it doesn't get posted in the first place. Using an insulting 404 redirect and promoting someone else's site instead of your also make it into the top 10.