No its not complusory,but It can be of a benefit for you because it will hasten your point.
Just joined but i will start referring tomorrow immediately.
I predict Arsenal 3 Burnley 0
I love this concept. Wow, Nigerians are really talented.
I am going to advertise this and get people to upgrade.
I think the admin should consider more Posts Points for Premium Members. This will attract people to upgrade the more.
There should be an increase on the Points received by each Premium Member for each activities here. You can also create a special section for Premium members. This section will be accessed only by Premium Members and they will earn more points in there.
This will surely get more people to go for the Premium Membership.
I referral a friend and I was only paid 10bn instead of 3500bn why.
I will try and join the referral stuff