Welp as mentioned in the Video, the guy who spams the Links become more trustable since you play with them and stuff. But your always safe never clicking any links
A smart guy should know that this doesn't look like the URL to the official site of Mumble at all though.
At least I don't think such a big company would make such a long URL as "mumblesourceforge". It looks a bit suspicious to be the official URL, don't the victims think?
Oh don't be so sure about that, if there's two things on this planet that's eternal, it's human stupidity, and winrar's trial period. Besides, there are always going to be children who doesn't know any better on Steam.
Like Tio said, this is phishing more than anything. Gunna move this as well, as this isn't the right place for this.