you read an "authenticate this" thread & it happens to be an item you are selling under your ebay ID? I just saw one of mine. Nothing like biting your tongue! (Luckily what followed was that it was authentic, which it positively was)
Unfortunately thats not allowed on here. When I am selling on ebay I mention on my items that I am a member here. I know that some people also put on their posting that if you want to know their PF id to contact them,