Dungeons and Dragons Online (DDO) is undoubtedly one of the best example of how a struggling subscription-based MMORPG going free-to-play can quickly turn things around. With Turbine Points, players can buy the content they want or pony up for the subscription for premium options. But not everyone has a lot of money to spend, so Turbine has introduced a new Referral Program that can net you some free points for DDO. By referring your friends, you can get 10% the amount of points your referred friends buy. And you get this each time they buy, so the points can add up if you have quite a few friends buying. For each person you refer, you will be given a custom referral link to send. There is even an app on Facebook to make the process quick and easy. So if you're playing DDO for free, invite your friends and maybe get yourself some free points in the process.