Inv.io is a newly launched file upload and sharing service. It's not suitable for backing up files because any file that hasn't been downloaded within two weeks to one month will be deleted. However, this shouldn't be a concern if you're just sharing files. For free users, Inv.io allows uploading files ranging from 800MB to 1GB in size (registered users can upload up to 1GB, while anonymous users are limited to 800MB). Each file will receive a unique URL similar to http://inv.io/8y7s-vd7, and you can start sharing the file using this link even before the upload is complete. Since the service is currently only 17% complete, registration isn't available yet. Additionally, there seems to be some kind of client tool waiting to be released. The current upload speed is quite good, but it’s likely that as more users join, the speed might not remain as favorable.