Hi Newbies and welcome to the Forex World!
Rick is right, Robominer/GT-Shadow can be dangerous. On the other hand they may be the only robots that can run with no lost trades; since they run with no stop loss.
Let us assume AUD/NZD is down to its center
point 
on the chart. The chart runs from about 1.0000 to 1.3000; so the center would be say 1.1500. You turn RoboMiner loose. It sells
short 
every 40 pips as the price goes up. Assume you have set lot size to .01 (one micro) on a mini account, then each pip is worth about 1 cent US (at least with my
broker 
, IBFX). Assuming an up
trend 
, when the price tops out there will be a
drawdown 
of about 1500 X .01 = $15.00 US on that first trade. However, every other trade also has a
drawdown 
. There will be about 37.5 trades that did not close. Let's round that to 40 trades; because price may break higher. Since each trade is made at a higher price we can multiphy 40 trades times 1/2 of 1500 pips, or 40 trades X 750 pips = a
drawdown 
of $300. While the price was in an up
trend 
there were very few winning trades; meanwhile you were paying interest on the
drawdown 
so lets say the wins equaled the interest. So you have a $300
drawdown 
on only a .01 (micro) lot. You might have been using 10 micros in which case your
drawdown 
would be $3,000; or if you used a mini lot your
drawdown 
would be $30,000. You can see from this the main problem is not having enough money in your account to cover the
drawdown 
when the price hits the top of the chart. In this case you will get a
margin call 
and your
broker 
will close your account and keep all of your money!
If you made it past the top, next the price goes back down. You are still paying interest; but you find a lot of good wins, plus the
drawdown 
goes down. Happy times are here again!