As part of its Bing Rewards program, Microsoft was giving away 100 GB of OneDrive storage for free valid for 2 years to all subscribed users of Bing Rewards program to the US based users. Now it has announced that all Dropbox will be getting 100GB OneDrive space for a period of one year. To claim the free storage, Dropbox users will have to sign up to OneDrive after logging into Dropbox. Once they are logged in, they need to download and save a OneDrive brochure to their Dropbox account. Once the brochure is saved in the Dropbox before the promotional storage is added to their OneDrive account. If you are a US based users, you will get the 100GB promised on Dropbox after you complete the above procedure, additionally you can click here, sign up with your Microsoft credentials including hotmail and live accounts, sign up for Bing Rewards program and get 100GB for 2 years. Microsoft has not made a official announcement yet so the time period of the offer is not know. Therefore we advise you to log into your Dropbox accounts now and get the 100GB free space for 1 year.