We’ve known it for a long time: the web is big. The first Google index in 1998 already had 26M pages, and by 2000 the Google index reached the 1B mark. Over the last 8 years, we’ve seen a lot of big numbers about how much content is really out there. 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 unique URLs on the web at once!