Activity of the Internet in 2008...

Email

• 1.3 billion – The number of email users worldwide.
• 210 billion – The number of emails sent per day in 2008.
• 70% – The percentage of emails that are spam.
• 53.8 trillion – The number of spam emails sent in 2008 (assuming 70% are spam).

Websites

• 186,727,854 – The number of websites on the Internet in December 2008.
• 31.5 million – The number of websites added during 2008.

Web servers

• 24.4% – The growth of Apache websites in 2008.
• 13.7% – The growth of IIS websites in 2008.
• 22.2% – The growth of Google GFE websites in 2008.
• 336.8% – The growth of Nginx websites in 2008.
• 100.3% – The growth of Lighttpd websites in 2008.

Domain names

• 77.5 million – .COM domain names at the end of 2008.
• 11.8 million – .NET domain names at the end of 2008.
• 7.2 million – .ORG domain names at the end of 2008.
• 174 million – The number of domain names across all top-level domains.
• 19% – The increase in the number of domain names in 2008.

Internet users

• 1,463,632,361 – The number of Internet users worldwide (June 2008).

• 578,538,257 – Internet users in Asia.
• 384,633,765 – Internet users in Europe.
  
• 248,241,969 – Internet users in North America.
• 139,009,209 – Internet users in Latin America/Caribbean.
• 51,065,630 – Internet users in Africa.
• 41,939,200 – Internet users in the Middle East.
• 20,204,331 – Internet users in Oceania/Australia.

Blogs

• 133 million – The number of blogs on the Internet (as tracked by Technorati).
• 900,000 – The number of new blog posts in a day.
• 329 million – The number of blog posts in 2008.

Images

• 10 billion – Photos hosted by Facebook (October 2008).
• 3 billion – Photos hosted by Flickr (November 2008).
• 6.2 billion – Photos hosted by Photobucket (October 2008).

Videos

• 12.7 billion – The number of online videos watched by American Internet users in a month (November 2008).
• 87 – The number of online videos viewed per month per Internet user in USA.
• 34% – The increase in viewing of online video in USA compared to 2007.
• 3.1 – The number of minutes of an average online video.

(and for the security aware):

Malicious software

• 1 million – The number of computer viruses in April 2008.
• 468% – The increase in malicious code compared to 2007.

Source: http://royal.pingdom.com/2009/01/22/internet-2008-in-numbers/
(thx LP)