I figured free i-drive's days were numbered but I expected a subscription or fee structure. Wrong-o:

After June 18th, the i-drive online file storage service will no longer be available through our Web site - www.idrive.com. Instead, i-drive is licensing the software that powers i-drive.com to telecommunications carriers and Internet Service Providers worldwide, so that they can provide their customers with storage services that are fully integrated with their other offerings.