For startup founders, if you want to do SEO from a strategic level and ignore all Google’s algorithm changes.
Google ten things: http://www.google.com/about/company/philosophy/
1. Focus on the user and all else will follow.
… we’ve focused on providing the best user experience possible. Whether we’re designing a new … look of the homepage, … will ultimately serve you…. Our homepage interface is clear and simple, and pages load instantly… it offers relevant content …
=> satisfy users with relevant contents and the best user experience
2. It’s best to do one thing really, really well.
we know what we do well, and how we could do it better….
=> become the expert in town
3. Fast is better than slow.
We know your time is valuable, so when you’re seeking an answer on the web you want it right away–and we aim to please. … We keep speed in mind with each new product we release, …
=> create a fast loading website/mobile, fast access to the right page
4. Democracy on the web works.
…We assess the importance of every web page using more than 200 signals…, which analyzes which sites have been “voted” to be the best sources of information by other pages across the web.
=> let’s people talk about you
5. You don’t need to be at your desk to need an answer.
The world is increasingly mobile: people want access to information wherever they are, whenever they need it. …
=> provide mobile/tablet web/app or even TV app
…
7. There’s always more information out there
… like adding the ability to search news archives, patents, academic journals, billions of images and millions of books…
=> create content in different formats, deliver in different channels
8. The need for information crosses all borders.
We offer Google’s search interface in more than 130 languages, offer people the ability to restrict results to content written in their own language..
=> localize your products with local languages
10. Great just isn’t good enough.
We see being great at something as a starting point, not an endpoint. … and we’re always looking for new places where we can make a difference.
=> differentiate your website from other competitors, by this way you can avoid duplicate content.