GDrive
So I guess Google's internal GDrive client leaked yesterday, named Platypus. Allows employees to sync files from their machines to a server. Only works from certain IPs, to be expected. Other apps out there do this today, but I am sure Google's implementation is very nice, you can control permissions, etc. They also have a Linux version.
We've been able to tap into GMail's storage for a while via the clever GMailFS, which creates a virtual filesystem around your GMail account , allowing you to use it as online storage. Not bad now that GMail comes with almost 3 Gb of space.

