Have important update - we've made a decision on chinese exchanges suspected in faking trading volume figures.

fxbtc integration changed to calculate actual trades and now it shows a much lower and probably real volume.
okcoin does not provide trading history data, so we can't go that route. So okcoin has been removed, it's put to ignored exchanges list now.
btctrade - removed also, for same reasons.

As a result of this CNY market trading volume shrank by around ten times, and now has much lower influence on global average price.

If someone has any information relevant to the case - we're happy to listen. We will probably review this decision once this situation will remedy itself.

Alex at BitcoinAverage.