Credits are given as currency to use more convenient features of the site, such as, but not limited to: downloading archives, update your static avatar to an animated one, and requesting a new member title.
How to Earn Credits
Earning credits is fairly simple. You need only participate in the site. A few ways to earn credits are listed below.
Suggesting or updating tags
Replying to a forum topic
Upload a doujinshi
Rating a doujinshi
Making a comment
Credits are spent by accessing features that warn you that you will be charged. If you do not have sufficient credits on your account you won't be able to perform the action you attempted. No refunds are allowed or possible. Please make sure that you spend your credits intelligently.