Social Media

800+ million – Number of users on Facebook by the end of 2011
200 million – Number of users added to Facebook during 2011
350 million – Number of Facebook users that log in to the service using their mobile phone
100 billion – Estimated number of photos on Facebook by mid-2011
225 million – Number of Twitter accounts
100 million – Number of active Twitter users in 2011
18.1 million – People following Lady Gaga. Twitter’s most popular user
250 million – Number of tweets per day (October 2011)
1 – #egypt was the number one hashtag on Twitter
8,868 – Number of tweets per second in August for the MTV Video Music Awards
$50,000 – The amount raised for charity by the most retweeted tweet of 2011
39 million – The number of Tumblr blogs by the end of 2011
70 million – Total number of WordPress blogs by the end of 2011
1 billion – The number of messages sent with WhatsApp during one day (October 2011)
2.6 billion – Worldwide IM accounts
2.4 billion – Social networking accounts worldwide

The Internet

3.146 billion – Number of email accounts worldwide – Microsoft Outlook is the number one email client (27.6 percent share), and the average corporate user sends and receives 112 emails every day
555 million – Number of websites (December 2011) – 300 million new websites were added in 2011
95.5 million – Number of .com domain names at the end of 2011 (no wonder you can’t find a good one)
2.1 billion – Internet users worldwide – 44 percent of these are in Asia
1 trillion – The number of video playbacks on YouTube
40 – Years since the first email was sent, in 1971

Source: pingdom