When it come to earning trust on the forum, its something you don't expect it coming and that is the one that worth it. If you do your activities with the sole purpose of earning trust, you will land in more trouble because that would be negating the rules of the forum of farming trust even if you have the money to pay for it. The best way to go about getting one is go about doing your things not every trust have to do with carrying out trades, managing a campaign, acting as escrow etc. It could be as easy delivering on clients project at the right time, or helping someone sort out some issues, keeping to your words from someone, busting a scam to save other people resources, ensuring the forum is clean of scammers and spammers etc because that trust is not regulated and it is based on someone emotions. Do well to contribute and someone might give you the desired opinion.