Yahoo is launching a series of columns on Yahoo Finance by various top authors in the world of finance and economics, covering a wide range of topics targeting amateur as well as market-savvy readers, writes MediaWeek. Yahoo is hoping the new columnists will expand Yahoo Finance's leadership position beyond market news and stock quotes. The columns are the latest offering of original content from Yahoo, which in the past merely aggregated content. The new columnists are David Bach, Stephen Covey, Ken Dychtwald, Robert Kiyosaki, Daniel Pink, Laura Rowley, Jeremy Siegel, Ben Stein, and Charles Wheelan.