About Coinmarketcap
Updated every 5 minutes.
Marketcap = Price x Total Supply
Prices are calculated by averaging the prices at the major exchanges weighted by volume.
Coins with stale datapoints (more than 6 hours old) will be shown at the bottom with question marks, and will be de-listed after 7 days.
Here is a Link to a site that will show you the Live stats of all the Crypto Coins that are able to be mined, and bought!
Crypto-Currency Market Capitalizations