Access to Statistics: Internet 2011 in numbers

Monday, January 30, 2012

Internet 2011 in numbers

From: http://royal.pingdom.com/2012/01/17/internet-2011-in-numbers/

Posted in Main on January 17th, 2012 by Pingdom

So what happened with the Internet in 2011? How many email accounts were there in the world in 2011? How many websites? How much did the most expensive domain name cost? How many photos were hosted on Facebook? How many videos were viewed to YouTube?

We’ve got answers to these questions and many more. A veritable smorgasbord of numbers, statistics and data lies in front of you. Using a variety of sources we’ve compiled what we think are some of the more interesting numbers that describe the Internet in 2011.

Email

3.146 billion – Number of email accounts worldwide.
27.6% – Microsoft Outlook was the most popular email client .
19% – Percentage of spam emails delivered to corporate email inboxes despite spam filters.
112 – Number of emails sent and received per day by the average corporate user.
71% – Percentage of worldwide email traffic that was spam (November 2011).
360 million – Total number of Hotmail users (largest email service in the world).
$44.25 – The estimated return on $1 invested in email marketing in 2011.
40 – Years since the first email was sent , in 1971.
0.39% – Percentage of email that was malicious (November 2011).