Allen, die gern mal einen Leitwert zur Größe des (von Google erfassten) WWW suchen, sei ein kurzer Blick in den Official Google Blog empfohlen:

“Recently, even our search engineers stopped in awe about just how big the web is these days — when our systems that process links on the web to find new content hit a milestone: 1 trillion (as in 1,000,000,000,000) unique URLs on the web at once!”