Can someone explain in layman's terms WTF Ripple is and why it is #2?
As far as why it's #2:
Let's say you premine 1,000,000,000 coins. If you sell ONE for a dollar, your market cap is now $1,000,000,000
For coinmarketcap.com, you have to filter premined + not mined to get a good count.
As far as where it's used: I don't know >_>