)Market cap isn't a perfect way to judge a crypto-systems success, but if does give a relatively good indication.
Keeping an eye on the data from CMC also allows you to spot obvious scams....like ABC and its regular pump pattern, which is so obviously one big buy made at the same time each day, with no other demand.
. 
It happened when we reduced FAIL supply (rate was 1 old for 0.00025 new FAIL), but Coinmarketcap didn't updated so I asked them to delist it, until we fix this. 
