Yahoo: If you werent familiar with the term speculative bubble before the U.S. economy imploded in 2008, you probably were after the crash. It quickly became part of our everyday lexicon as the government began to bail out many of the institutions that speculated in high-risk financial products during the housing boom. Speculative bubbles are based primarily on exaggerated expectations of future growth, and a new report states that Australia is ripe for a speculative financial implosion. The culprit?...