The Wi-Fi simple questions thread might be more suitable.I see credits listred on trading threads. How does one earn credits on this site and how can you view the number of credits you have and send credits?
Credits aren't an official part of the forum; trade thread owners choose to use them. Basically, they're 'IOU' notes; if they want one of your Pokémon and you trade them it, but they don't have anything you want or you can't decide, they'll sometimes offer you a credit. Some people also give credits to someone who helps them out (e.g. cloning or EV training). As such, there's no way you can view how many you have; you just need to keep track of them yourself.
Credits generally aren't transferable; they can only be used at the thread you got them, and most people won't let you give them to someone else.