I went back as far as I could, and Facebook never released total registered users. It wouldn't be relevant since fan pages, product pages, apps etc. are all in the same namespace, and there would be a lot of spam and dev accounts
I remember reading a blog post where somebody tried to calculate it by enumerating user ID's, but he didn't come to a clear conclusion.
the FB key numbers are 650M active per month, 50% of that active per day. I wish other companies were as simple and transparent with their own stats PR - instead of nonsense like 'messages processed per fortnight', 'total logins', etc. etc.
I remember reading a blog post where somebody tried to calculate it by enumerating user ID's, but he didn't come to a clear conclusion.
the FB key numbers are 650M active per month, 50% of that active per day. I wish other companies were as simple and transparent with their own stats PR - instead of nonsense like 'messages processed per fortnight', 'total logins', etc. etc.