The three major groups of SEO are On the Page SEO, Off the Page SEO, and Violations. The Search Engine Land Periodic Table weights each signal from -3 to -1 and 1 to 3. 3 having the most positive influence, and -3 having the most negative impact.
On the Page Factors include:
Content – Big surprise. If I had a dollar for every time I’ve heard “Content is King”. As the most identifiable element in the SEO formula, many people can feel confident in identifying these signals that help your content rank well:
HTML – Going a little deeper, if you know how to view source on a website you can pretty much analyze this area of your site. But, unless you like to look through a bunch of code, it may get a little boring. None the less, code is very important!
Architecture – OK I had to go grab one of the specialists to finish this one for me:
Off the Page Factors Include:
Links: You’ll have to get your magnifying glass out for these ones and turn yourself into the little social butterfly you always told yourself you were. Links show what an authority you are on a subject and the popularity you can gain amongst your peers and affiliates.
Trust: Do you trust me? Why do you trust me? If you were looking at a new employee wouldn’t you want to check them out a little bit to get the scoop?
Social: As the new kid on the block only ranking a +2 and +1 months ago, but now thought to be much more. Many other specialists argue that it’s a direct correlation between good site content and Social aspects. A good site is just going to have good social engagement. This is one of those elements that we can look at and say there’s a lot more in the other groups, so we may see more elements pop up in the future. But right now we focus on:
Personal: This intertwines with the Social aspects and local aspects. As Moz.com reported this week, a site’s number of Google +’s can be directly correlated to their search rankings. How much of your content has been shared on Google +?