There aren't winning systems, but there are winning streaks in the daily number games. Some of Mike's programs certainly have their moments where if you only knew in advance the size of history to use and when to begin and end playing the program's picks, you would have the chance to grow a doubling build like Steve Player likes to sell as if doubling were a system by itself. Still, continuing such a system beyond it's winning streak dumps you back at the beginning rather like a roller coaster ride. Even the Keypad System http://www.lotto-logix.com/txthouse/keypad.html man I start thinking about playing another state's game and pull the draw history off the web site and there are sections of the history where the Keypad numbers are all in clusters and of course worse dry spells between clusters, but the clusters are there if there were a way to identify them in advance.
There might be a long term advantage to playing one or two numbers per day straight and doubling the bet after winning until either winning again and doubling again or dropping back to a dollar a day if you don't win again. You can find numbers like 012 and 789 where this kind of thing can work if you can wait it out.
ROJH: One interesting thing is to take a draw history, convert it to a wheel, drop it into Lottery Director http://www.ldir.com/ free demo and load it with pointer numbers in numeric order. See how many jackpots survive the gross filtering out of larger and larger numbers of combinations. BobP