This is according to Google who have reported that they have successfully crawled one trillion web pages. Google started crawling web in 1998 and since then both Google and Web have grown exponentially. Here are numbers according to Google:

1998 Google Starts crawling. There are 26 million unique pages

2000 Google crawls One billion pages

2008 One trillion mark is hit

Of course authenticity of these one trillion pages being unique is questionable and Google makes it more clear in this post.

I take this opportunity to thank Sir Tim Berners-Lee for inventing World Wide Web and changing the way humans communicate.

Definitely something to be proud of. Mozilla has confirmed their entry into Guinness Book Of World Records for the largest number of software downloads in 24 hours. According to their site Firefox3 was downloaded 8,002,530 times on 18th June, 2008.