Hi Jesse, first Welcome!
Second to answer your question, I've never tried to use a trading robot.
To be frank, I don't believe in the kind of money machine that are advertised or sold. The question to be raised is "if you have a robot able to make money on a regular basis, why would you give or sell it ?". One condition for it to keep working is precisely it needs to be kept secret.
Now regarding the existence of a holy grail, an algorithm that makes money, the question is more open while I know guys seeing at it for years unsucessfully, and I'm open to discuss it in a later discussion, it's getting late here. Now if you don't want to spend your time trading forex (it's really time consuming!!!), I would recommend you find a good forex trader to manage your money (sorry I don't take clients

but trade for my own account), if you don't know where to look at, just let me know
Regarding robot4free, a new member here, Martin, posted about Rita Lasker's site. That's Martin's only post here and it really looks like a spam. http://forum.thelordoftrading.com/algo-trading-stat-arb-and-others-systematic-kinds-of-magics-f6/free-forex-robot-t753.htm
If it's a spam it's a scam (and we could assume that all the good reviews seen on the web are fake). So the best is to ask Martin.... Martin are you here ????