HTTP codes are one of those areas that most people don’t want to know about. The problem is, those codes can ultimately affect how your pages are seen by the search engines. It is handy to have at the very least an overview of the codes and how they affect your site, your visitors and the search engines. JustSearch in the UK has a handy little post on the subject and goes into a little more detail than I will. Having a passing knowledge of code groups is a good start and can give you idea of