MSGraph has posted a link to one of the most important documents ever to hit the SEO world (in my opinion). Read this document (which is a patent application by Google) and be prepared to say OMG, WTF, and every other exclamation of amazement you can dream up. I don't want to spoil this for anyone, so all I will say is this... Want proof that the sandbox exists? Want an explanation of it directly from Google? Read it NOW.