It's big business," TAB Sportsbet's Craig Nugent says. "We've gone from $60 million to a billion in a decade." 3/2008
A good article looks at the way they TAB sportsbet formulate the odds for weekend games.
http://www.theage.com.au/news/sport/the-billiondollar-men-of-betting/2008/03/22/1205602733857.html
cheers