The Internet in Numbers: 2009

Email
90 trillion – The number of emails sent on the Internet in 2009.
247 billion – Average number of email messages per day.
1.4 billion – The number of email users worldwide.
100 million – New email users since the year before.
81% – The percentage of emails that were spam.
92% – Peak spam levels late in the year.
24% – Increase in spam since last year.
200 billion – The number of spam emails per day (assuming 81% are spam).

Websites
234 million – The number of websites as of December 2009.
47 million – Added websites in 2009.

Web servers
13.9% – The growth of Apache websites in 2009.
-22.1% – The growth of IIS websites in 2009.
35.0% – The growth of Google GFE websites in 2009.
384.4% – The growth of Nginx websites in 2009.
-72.4% – The growth of Lighttpd websites in 2009.

Domain names
81.8 million – .COM domain names at the end of 2009.
12.3 million – .NET domain names at the end of 2009.
7.8 million – .ORG domain names at the end of 2009.
76.3 million – The number of country code top-level domains (e.g. .CN, .UK, .DE, etc.).
187 million – The number of domain names across all top-level domains (October 2009).
8% – The increase in domain names since the year before.

Internet users
1.73 billion – Internet users worldwide (September 2009).
18% – Increase in Internet users since the previous year.
738,257,230 – Internet users in Asia.
418,029,796 – Internet users in Europe.
252,908,000 – Internet users in North America.
179,031,479 – Internet users in Latin America / Caribbean.
67,371,700 – Internet users in Africa.
57,425,046 – Internet users in the Middle East.
20,970,490 – Internet users in Oceania / Australia.

Social media
126 million – The number of blogs on the Internet (as tracked by BlogPulse).
84% – Percent of social network sites with more women than men.
27.3 million – Number of tweets on Twitter per day (November, 2009)
57% – Percentage of Twitter’s user base located in the United States.
4.25 million – People following @aplusk (Ashton Kutcher, Twitter’s most followed user).
350 million – People on Facebook.
50% – Percentage of Facebook users that log in every day.
500,000 – The number of active Facebook applications.

Images
4 billion – Photos hosted by Flickr (October 2009).
2.5 billion – Photos uploaded each month to Facebook.
30 billion – At the current rate, the number of photos uploaded to Facebook per year.

Videos
1 billion – The total number of videos YouTube serves in one day.
12.2 billion – Videos viewed per month on YouTube in the US (November 2009).
924 million – Videos viewed per month on Hulu in the US (November 2009).
182 – The number of online videos the average Internet user watches in a month (USA).
82% – Percentage of Internet users that view videos online (USA).
39.4% – YouTube online video market share (USA).
81.9% – Percentage of embedded videos on blogs that are YouTube videos.

Malicious software
148,000 – New zombie computers created per day (used in botnets for sending spam, etc.)
2.6 million – Amount of malicious code threats at the start of 2009 (viruses, trojans, etc.)
921,143 – The number of new malicious code signatures added by Symantec in Q4 2009.