Quotations about importance of social media and backlinks

[AnthOrange]

Hi all,

I'm looking to put together a presentation on SEO and I'm wondering if anyone knows any good quotes that relate to the importance of having content on your site that people want to use and share. I'm looking for something like this:

“Today’s marketing success comes from self-publishing Web content that people want to share. It’s not about gimmicks. It’s not about paying an agency to interrupt others.”

• David Meerman Scott “The New Rules of Marketing and PR”

but ideally something that illustrates in terms of numbers how much more traffic and seo benefits a site can expect from having good guides, pdfs and news stories that people want to share.

Thanks so much for any helo you can offer.

thanks,

David

[AnthOrange]

thanks both, both very interesting links and articles. 
How about something I can put in quotation marks with a maven's name behind, thinking like "I think SEO is great!" Avanish Kaushik - google.

[Bevelwise]

Hi Julian,

Here's an article, "The Tweet Effect",  I read awhile ago on the SEOMoz blog that sounds like it will help support you. It was an experiment on how social media (in this case Twitter) can impact rankings. Not necessarily a quote, but I think you will be pleased to read the results and could find a way to factor it into your presentation.

[EGOL]

Slashdot effect

We occasionally have content that engages the visitor on one of these community sites.  It can start on one -such as slashdot - them move across several social sites such ad digg, reddit, stumbleupon.  Great content can pull 100,000 visitors in a day from these sources alone - plus generate a lot of links, likes, tweets, etc.