Don’t have anymore documents to upload but need more credits? Check out Thinkswap’s Bounty Program! If you can find any incorrect subject code / name on Thinkswap or you believe there is now a new code / name, please let us know and you could earn 2 free exchange credits! As well as this, provide us with a new more effective title and description for any document you have purchased and we will give you 0.5 free credits per update!
Look for the "Claim" link on a document or in your "My Library" to participate.