Here is a comprehensive list of all of the YouTube statistics that you need to know. Updated for July 2014.
Here is my monthly, running tally of how many people are using some of the top social media, services and mobile apps updated for July 2014 (the best I could find, at least).
This month, I updated a number of listings including Facebook, Facebook Messenger, Twitter, LinkedIn, WeChat, WhatsApp, Evernote, Dropbox, Prezi, Line and many others. I also added over 80 new listings this time around.