This is the latest promotion from Microsoft which you can get up 100GB of OneDrive cloud storage for free in next two years.
After you have done with the registration progress, simply click to get the reward button (you can find it under Earn & Explorer category) and agree to receive promotional emails from OneDrive (unsubscribe feature available, anytime).
Regularly, Microsoft will charge you $2 per month for 100GB of storage space in OneDrive. With this offer, the 100GB storage space will available to use until it lasts in next two years. So, you will have a lot of space to storage all of your photos, video, other files as well as use it as a backup option or main storage in next generation of Windows: the Windows 10.
Unfortunately, this promotion isn’t available worldwide, just for Bing Rewards support countries. Can’t get the promotion ? You can also get unlimited of OneDrive storage space if subscribe to Office 365.