As a solo founder it could be helpful to learn about a new security flaw in your application that you didn't know about.
Only if they were helpful, of course. Often more than not I am getting emails about something that is not an issue. It won't even be an issue if my site had tens of XSS and users using IE 5. But I also don't want to discourage open researches that do exist somewhere.
Do you have a bug bounty program? What are your terms?
startnew.app