Step 1 : Open http://ztag.zynga.com/
Step 2 Type A Code Such As your name or a funny Word upto 30 characters and click get ZTag If it is A Valid OR not in use Ztag
Or you will get this page
So Type You code and click claim a tag
Step 3 : Click Get 100 Zcoins
Step 4 : Wait till you get redirected And Check Your Balance you will Get +100 Zcoins
Note : You Can Only Claim These Coins once , I Prefer To post it on farmville since there isn't a Zynga or Rewardville section
Source: http://www.zynga.com/about/press/company-blog/more-social-more-fun-come-out-and-play
