Hello

Does anyone here have data on the number of user at those major exchanges (Bitstamp, BTC-E, BTC China, Bitfinex)? This is potentially interesting data for anyone interested in exchange-related business. Also the amount of BTC that users have on their accounts in general or which they are actively trading (anonymous volume per user) would be super interesting but probably impossible to get.

The only number I found so far is BTC-E where I currently see about 4600 users + 1700 bots online.

Thanks and regards,
Holle