We now offer the multi-currency system with 15 new currencies listed below.  We also offer competitive trading fees with volume discounts.  Furthere details can be found here.  https://support.mtgox.com/entries/20388551-lowered-trade-fees-and-volume-discounts
Welcome to Mt.Gox!

mtgoxEUR - Euro
mtgoxCAD - Canadian Dollar
mtgoxGBP - British Pound 
mtgoxCHF - Swiss Francs
mtgoxRUB - Russian Rubles
mtgoxAUD - Australian Dollars
mtgoxSEK - Swedish Krona
mtgoxDKK - Danish Krona
mtgoxHKD - Hong Kong Dollars
mtgoxPLN - Polish Zloty
mtgoxCNY - Chinese Yuan
mtgoxSGD - Singapore Dollars
mtgoxTHB - Thai Baht
mtgoxNZD - New Zealand Dollars
mtgoxJPY - Japanese Yen