From http://www.kenburbary.com/2011/03/facebook-demographics-revi..., slightly out of date, but still useful:
- Average user visits the site 40 times per month
- Average user spends an 23 minutes (23:20 to be precise) on each visit
- Global users 629,982,480 (I believe this has passed 800 million now)
So, on average hundreds of millions of people are spending about 1/2 an hour looking at Facebook.com every day.As much as their ability to target ads is hyped (or derided), does it really matter? Isn't targeting just a way to charge a premium, or drive click-thru on massive volume?
Facebook isn't competing with other websites for online advertising. It's competing with the entire entertainment sector for all advertising, everywhere. That isn't going to change soon.