If you are looking for just about as much free storage as you can ever utilize then Tencent has something that will pique your interest.
Chinese cloud company, Tencent is offering users 10TB of free storage on its Weiyun cloud storage service in an attempt to one up their competing companies. So how does one go about getting 10TB of free storage? Signing up for Tencent is a given, then provide a QQ account number, and download the Weiyun mobile app. This process starts users off with 1TB of storage and as more files are uploaded users receive additional storage until they hit the 10tb free storage limit.