Spoofs the BitTorrent tracker, making it believe that you are uploading a lot more than you actually are, thus increasing your overall ratio.
— How do I get the password to install RatioMaster?
According to the forum where the tool originated from, the required password should be:
As far as I can see, the tool is free to use, so you shouldn't have to deal... with any other problems or restrictions after installing RatioMaster.
Note: Be very careful with this app as it might lead to account banning when you're using it on private trackers. Read more