Free cloud storage is great. That is until you've added it to your workflow and the amount of storage you have is being reduced by Microsoft. That's what happened to OneDrive users. In November, Microsoft announced that the 15GB of free storage it was offering was being reduced to 5GB. Naturally folks got pissed. One post about the reduction in space generated over 72,000 votes on a OneDrive forum. That got the company to backtrack (sort of) and is offering legacy customers with 15GB the chance to keep all that room in the cloud. But they have to opt-in by January 31.