Google wants to promote a better web experience for readers. With the growth of spam site and other SEO gaming techniques the majority of more recent sites are not high quality. Therefore, Google is weighting older sites more heavily in their algorithm, under the supposition that older sites are more likely to have quality content. This implies newer site will have to be more remarkable and add real value if they want to compete with established sites.

[youtube:http://www.youtube.com/watch?v=9BbXWdfE3ho]