Top Three Google SEO Ranking Factors
Content, Bounce Rate, Inbound Links



1. Content

Make Sense

Search engines have really taken their searching to the next level and have begun sifting through the nonsensical articles that have links to other pages and are just the same words repeated over and over again whose sole idea is for page rank. By this rationale your article needs to make sense; in one way or another; or your article will not be included in the page rank.
How to Write SEO Content By Jesse Schmitt, eHow


Write relevant content

Search engines have ways of recognizing when a page is not really about what it might seem to be about. If you're playing games with your content to try and fool search engines, it will eventually be found and you'll lose rank or even be banned. It's much better to write content that is relevant to your topic.
What is SEO Friendly Content By Jennifer Kyrnin, About.com

Uniqueness

Content must be unique; this means for example on any given webpage no more than 30% of the information on that page can be identical to another web page on the web. There will always be some level of overlay but 30% is a good number to stay below.
Writing Good SEO Content For your website by Techrepublic.com

2. Bounce Rate

What is it?

Bounce rate is the percentage of single-page visits or visits in which the person left your site from the entrance (landing) page. Use this metric to measure visit quality - a high bounce rate generally indicates that site entrance pages aren't relevant to your visitors.
What does Bounce Rate mean by Google

What number to shoot for?

Google Analytics specialist Avinash Kaushik has stated: "My own personal observation is that it is really hard to get a bounce rate under 20%, anything over 35% is cause for concern, 50% (above) is worrying.
By Wikipedia, the free encyclopedia

3 . Inbound Links

Articles

Writing articles is one of the best techniques for getting one-way inbound links to your website. Many webmasters are looking for more content for their websites and Ezines. You can provide them with that content by writing articles and submitting them to websites, Ezines, and article directories.
In return for your effort you can put a little blurb about yourself and/or your business, with a link to your website, at the end of the article. You will rack up a very high amount of inbound links to your website by utilizing this technique. I have done it many times with a lot of success.
Seven Powerful Ways to Get One-Way Inbound Links - work-at-home-jobs-iowa.com

Blogs and Twitter - No

Google doesn't want to make your life too easy. Links are a core part of the Google's ranking algorithm and they don't want to make it too easy for you to manipulate that data. Posting links to your content on Twitter and linking back from blogs is EASY. If it was this easy, we could all manipulate the listings and Google would soon start returning junk results and people would start to use another search engine.

The most highly prized link in the eyes of Google is presented like this (and it's extremely HARD to get):

a) A link on a site that relates to your content or industry niche.

b) A link within the body of the content (an inline link) not in the sidebar or on a "links" page.

c) A link with your keywords in it. (Example: Click here for my advice about Twitter)

d) A direct link to your content page, not your homepage.

Twitter and blog comment links have no SEO value - sanctuarymg.com