I see a lot of value in CoolWulf's service, and appreciate the offer to try it for free. So kudos for that (assuming his info source is not illegal).

Now, there's nothing wrong with advertising on another website - really, that's what is being done here on Flyertalk too - but sending unsolicited messages is spam, by definition. That's a business practice that should be changed. And unless he's including instructions for opting out and honoring those requests, he may be in violation of the can-spam law.