Sure, you can find some nice social networks, you can then Google for some user stats, and then aggregate the data.
But wouldn’t it be simpler had a web site dedicated to just showing statistics existed? More than this, wouldn’t it be great had the statistics would be constantly updated with the latest news about the number of users for those specific networks?
Good news! Such a web site exists, and it says:
Here is my monthly, running tally of how many people are using some of the top social media, digital services and mobile apps updated for July 2014 (the best I could find, at least). This list grows pretty regularly. It began with a simple listing of some of the obvious social networks like Facebook, Twitter, LinkedIn, Skype, YouTube, WhatsApp, etc; then grew to include digital services like Amazon, Google, eBay, Netflix and Pandora; then the focus turned to APAC social and digital properties like Weibo, WeChat, JD.com, LINE and Renren; and lately, I have been focused on updating current listings, adding in new ones along with smaller niche ones that I may have overlooked at the beginning. This post now includes over 600 listings and more are added almost weekly.
Visit the web site here (the social networks are so numerous, that they need to be divided on more than one page):