Hey Jason,It is actually rather clear, and as @Maldesto copied, pasted, and colored. It says that the same person can not give you more than 1 feedback. Which I'll also disagree with, because if they can't give you more than one, your feedback ISN'T an ACCURATE number of GOOD/SUCCESSFUL trades.
It is very clear, but as you stated, I don't agree with the rule either.
However, considering it is the rules and @Maldesto didn't make them, he IS doing his job properly.
However the rule should be changed as I stated above, for example:
I know I've traded 5m to Jason last week for $xxx. I know he doesn't scam. So a week later I now have 5m more I want to sell. If I'm getting a fair pay (and he is still buying gold) I would sell it to him, because I feel moee comfortable trading with him than others. I believe he/I should be able to give feedback again beause this is a different occasion and a successful trade.