I guess this company has partnered with PS. You basically complete all sorts of game missions..playing games on fb, watching game trailers, etc. It works!
General Mission URL:

My current referral missions:
Dawn of the dragons (game)

IMVU (virtual dating - safe)

Dinglepop (Game)

Market Street (Game)

Bejeweled Blitz (Game)

Pool (Game)

Maya Pyramid (Game)

Chocoltier Sweet Society (Game)

Bubble Pop (Game)

Fishdom (Game)

Instructions:
Home page
There is a list of missions you can try. It is under the tab "earn game coins".
Once you selected something you must read the instructions in order to receive credit for doing it. Once you've properly read the instructions click "start the mission".
Basically the coins that you make on this site get converted to FB credits..which of course can be used as currency that you can convert in the game! When you have at minimum 100 game coins click the top most tab that says 'spend game coins'. You will see a list of games that Game Coins is affiliated with. Of course select Pet Society. It is near the bottom of the screen.
You can get a minimum of 5 fbc which of course can be used in the game and converted into cash coins. Of course the more game coins you make the more facebook credits and the more cash coins.
The more game coins you make the more fbc and in turn cash coins you will have.
Currency Conversion Chart:
100 gc = 5 fbc
200 gc = 10 fbc
400 gc = 20 fbc
800 gc = 40 fbc
25 cc = 50 fbc
55 cc = 100 fbc
etc
gc = game coins
fbc = facebook credits
cc= cash coins
Confirmed Tips
Make sure to refer your missions to PS friends on facebook. It's an easy way to get more game coins when you run out of missions.
Apparently Bubble Pop can be used many times for credit! Woohoo! Have at it. It's insanely lucrative! -credit to bry090yrb for this tip!
Admin of Game Coins
October 18, 2010
"admin commented:
We think our amounts are OK… They are pretty easy missions after all! Sometimes missions can pay 30 Game Coins (for longer gameplay) and in the future, we might have missions worth even more than that!
You can only complete missions once, but we’ll be putting up new ones – or extending current ones to complete the next level or something similar… Check back soon!""
Credits go to: JBongoX






