To transfer gold credits to another user you have to open user's profile click "More" green button.
Click on "Transfer credits", enter amount of gold credits and click "Send" green button
Gold credits are the internal currency of the Video chat. They are necessary for buying the accounts and gifts, expression of emotions, using the abilities, Oscar's awarding etc.

To buy credits you have to click "Buy credits" in right bottom corner. Choose your favorite payment system and click it.
Enter amount in your currency and you will see how much you will get gold credits.
Click "Buy" button.