this could be devastating for bitcoin newbies like me. Normally, there are three ways to do so.
Read more about this story at:
http://news.8btc.com/threes-ways-to-generate-fake-transactions-at-bitcoin-exchanges
Interesting article, personally i do believe that at least one of these Chinese exchanges has been involved in the act of volume fixing in the past, simply because there is really no way that one single exchange is able to get 1 million + coins which is basically the entire amount of bitcoins satoshi has got.
But right now the Chinese government is intervening.
This means that the volumes will be down, and therefore there will probably be no volume fixing from now on.