Are you making the assumption that people would be afraid of your application because it could potentially be malware, or because they don't want to switch to t

Are you making the assumption that people would be afraid of your application because it could potentially be malware, or because they don't want to switch to the third mode? If it's the latter, I hope the control is on an individual applications basis so that I am alerted about other unsigned applications even after having allowed yours. If it's about the first, I think the users who can get a Bittorrent client up and running (and have an interest in it, in the first place) are also able to read reviews and ask friends who may have recommended them this application.