I've finally read the "Wired" article and would like to make two observations. First, I remember looking at Benter's paper in "Efficiency of Racetrack Betting Markets", where he describes what he's doing in Hong Kong and wasn't all that impressed. The kinds of data he was putting into his formulas were pretty simplistic, like "Jockey's win %", "Lifetime earnings", etc, etc. Secondly, didn't Bill Quirin do essentially the same thing as these guys are doing with his regression equations like 25 years ago?