Note: Using this tool in production will log searches and results as the user executing it, and you might be in violation of company policy and regulations by using it. I’m a big advocate of security in the enterprise, and by using such a tool you might get access to information which you are not privy to, even as a search administrator.
I hope new releases of FS4sP of will tighten this up, and give us a better way of debugging searches on the FAST server. I also hope Microsoft will secure/encrypt the fixml files.