joined, posted, will return regularly
keep up the great work
I don't know that there is so many coins.
On your site are all coins even this dead ?
To give you an idea of how dead most coins are check out
http://cryptodatabase.net/coins-countryAll of those N/A are either non existant or defunct features. A lot of them don't even have working sources.
Alternatively, you can go to
http://cryptodatabase.net/price and input the coins abbr. That api will check 60 exchanges for that coin and display the price. If it shows up as "0 or Unlisted" then it is not on an exchange and most likely is dead.