Internet 2010 in numbers

Extract:
"Social media
152 million – The number of blogs on the Internet (as tracked by BlogPulse).
25 billion – Number of sent tweets on Twitter in 2010
100 million – New accounts added on Twitter in 2010
175 million – People on Twitter as of September 2010
7.7 million – People following @ladygaga (Lady Gaga, Twitter’s most followed user).
600 million – People on Facebook at the end of 2010.
250 million – New people on Facebook in 2010.
30 billion – Pieces of content (links, notes, photos, etc.) shared on Facebook per month.
70% – Share of Facebook’s user base located outside the United States.
20 million – The number of Facebook apps installed each day."
Source:  Various, collated by Royal Pingdom, 12th January 2011
Note - lots more stats on photos, browsers, video and more on the Pingdom site