courtenaybird:

Tumblr’s user base currently crams out around 55 million posts per day. While not quite at Facebook levels (on the other hand, what is?), the current pace still amounts to an impressive amount of content:

• 637 posts per second
• 38,194 posts per minute
• 2.3 million posts per hour
• 385 million posts per week
• 1.65 billion posts per month
• 20 billion posts per year

Tumblr’s massive growth in 2011 continues:

• Tumblr went from 12 to 41 million blogs in 2011 (29 million added)
• Tumblr users created more than 13 billion blog posts in 2011
• The total number of posts on Tumblr grew by 500%