This is more a fun project than anything else. It should be obvious to anyone the reasons why this is not an accurate subscriber count for MMOs. What it is though, is an interesting (to me and maybe others) tracker of popularity based on reddit users.
It also allows you to see quite nicely if an MMO is growing or shrinking, regardless of what the actual user count may be.
The code will be available in the near future for anyone wanting to fork or improve it.
The site has been heavily influenced and contributed to by /r/mmorpg on reddit, a great community for MMO players. Join in.
I developed this for fun in a few hours so don't judge. If you'd like to chat hit me up at blakey.co.