Suppose if I buy something from a user in this forum ? And after the transaction and trading am I supposed to ask him to give me a feedback in my profile ? And doing it, how do you see this ?
If the amount involved is significant, leaving a positive feedback to the counter party is the best thing to do. Its not wrong to ask him to leave you a positive feedback for a successful trade but you should not insist it as if its a must because trust feedbackis gain through common trust.
Doing a consecutive successful feedback from a legit trade will increase your reputation especially if the amount involved is huge. But you should not trade for the trust score because you will surely failed to build your reputation. If you are planning to established here then you should invest time and effort to fulfill many transactions successfully.