1 Credit is equivalent to 1 SAT (Social Activity Token) used on Sphere Social.
You can redeem your credits by filling out this form: https://goo.gl/Dfn9DG
We will need:
1) Your account email address on Sphere Social
2) The number of credits you want to exchange for SAT
3) Your Ethererum wallet address. (Note: No ethereum wallet address from exchanges. Please only use addresses from MyEtherWallet, Mist, Metamask, etc)
You can earn credits by doing various activities on the site such as adding blog, creat new event..., etc. Also you can purchase credits using PayPal account.
To see which actions you can perform to earn SAT, please visit: Action Types and Credits