Good question, so this has been a very long time coming. Initially this was supposed to be part of a 'shop' system where candidates are rewarded for posts, but I've had to push this back a number of times because each time it has proved hard to implement than I imagined.
We're very likely to be upgrading the forum soon, so when we do, I think we'll restart the credit system and I'll think of a way we can reward candidates who have accrued a high number of credits.
In the meantime, we are
giving away a free month of TCLA Premium every week for forum contributions!