Google is constantly changing the search algorithm and will continue to change in future and this is not good news for black hat SEO’s. In a recent video uploaded by Matt Cutts, the head of Google search spam team, he talks about even more updates in future. These updates would slowly and gradually eradicate all the spam results from Google. These may well include all the sites which are still ranking high due to the presence of unnatural backlinks in them. Creating a brand and a site for the user will work in future. So, stop spamming Google and start focussing on the user. Also, Matt points out that instead of focusing just on Google as a channel of generating organic leads, concentrate on other channels like social media, yellow pages etc.
This is what Matt Cutts says:-
Also See:-
Site Affected by Panda Update?
Advertorial Link Building Spam
New Google Search Quality Updates
Importance of Content for Seo in a Post Panda World
What is Good Content?
Seo Content Copywriting Basics
3 Seo Fundamentals Every Webmaster Should Follow
Seo Secrets