Despite what the seller claims above, he does not respond within an hour or so. That is a bold-faced lie. Many, many times he'll tell you to get on Skype at a certain time for support, and he's never there. It's taken me a few weeks (yes weeks) to resolve several issues trying to deal with support. He also makes fake promises that he doesn't keep. There's a reason why the main RankerX thread was closed. The other support guy for RankerX can help you with the easy stuff pretty quick, but not if something's that requires deep knowledge of how the software works. You're shit out of luck there because it's 50/50 if you're going to get help on it from the seller on Skype.
Besides all this, the tool is OK. The seller is constantly updating it, which to me is more important than the poor support system. You can use it to diversify your anchor text. You're probably not going to rank keywords with it alone. You'll need stronger links as well.