Thanks for the site. How about an option to "De-Weight" MtGox? Maybe put in a slider control. I know, so many requests! 
Right now there is a button on site to the right from USD price, labeled "Ignore MTGOx for USD/EUR/GBP". Push it - it shifts mtgox off the list for those currencies. There is an API with that data also at http://api.bitcoinaverage.com/no-mtgox/.