Well, last week I discussed the rumored arrival of Google Drive, which should feature 5GB of Cloud Storage for free and allow you to get more if you want to spend a few dollars.
Today it seems that service has launched.
I went to "drive.google.com" after doing a Google search on the service. This link sent me to a page that informed me that my Google Drive was not ready yet. I clicked on a link that told them I wanted to be part of Google Drive and then a page appeared that told me I would be notified via Gmail when my Drive was ready.
From what I can glean, it appears to be designed to work well with Google Docs and should allow sharing & other functions.
Once mine is setup, I will let you know and I'll keep you advised as I tinker with it...