Regarding your second question about the BTC/EUR volume. We can definitely say that the volume is real and we are 100% sure about it. You can even place some orders and make sure that all of them are filled. In case you don't want to place real money orders, please try our Demo mode trading.
Thank you for choosing our service,
The "hitbtc" team

It seems you don't understand the question.
Just look at bitcoincharts (
http://bitcoincharts.com/markets/currency/EUR.html). The difference in the pattern of the volumes is obvious. All exchanges except hitbtc synchronize: high volatility, high volume; low volatility, low volume