Never, ever, trust "free" software that comes from a spammer. It's probably loaded with malicious features. It's well known that a common spammer technique is to use "free" software to install backdoors on suckers' computers that allow the spammer to take control of the victims computer and use it for further spamming.
See <http://en.wikipedia.org/wiki/Botnet>
-- Our enemies shall talk themselves to death, and we will bury them with their own confusion. -- Remove "HatesSpam" and ".invalid" from email address to contact me.