Interesting article to read
http://www.businessspectator.com.au/bs.nsf/Article/ASX-high-frequency-trading-HFT-markets-NYSE-pd20120411-T8S3V?OpenDocument&emcontent_Kohler
And the big question is
HOW is the AUSTRALIAN GOVERNMENT or ASX protecting the retail shareholder, big number of who are retire es holding a SMSF portfolio.
Maybe you like to discuss same with your local MP. And point out why Labor Party is polling so poorly .