Please use your username as the thread title here. Provide links to other platforms you are actively selling or trading on such as eBay, Facebook, etc..
You can then add your feedback thread to your user profile in the field named "B/S/T Feedback". *See below*
After a successful transaction in one of the B/S/T forums, please encourage the member you worked with to leave feedback for you by posting a quick reply to your thread. "Successful deal", "Trade completed", "Card arrived safely", etc.. If feedback is left in the original sales/trade thread you can also link to that.
Your personal thread here will act as a running tally that others can view for future transactions with you.