>Overall I think a simple Reddit-style moderation with votes can certainly do a lot to improve an experience like this, but reputation systems are very difficult. There are many ways to game/manipulate systems like this, starting with basic sybil attacks, but also coercion (e.g. show me your privates or I downvote you), and other imaginative abuses. It might be worth discussing moderation strategies beyond the voting system.

you are right but i have not explained the complete system, this system has some constraints to vote