If I understood it, this service could as well be called "onefilebackup", couldn't it?<p>It is supposed to receive encrypted files anyway, so it does not check its contents.
Why is this service free?
Because I like to develop software and this is my contribution to the opensource community. There are plans to provide a paid service to provide revenue that will keep the service sustainable. As it stands, there are multiple tebibytes of storage available, so tarbackup should be available for free well into the future.<p>I think a pertinent question to answer would be "How is this service free"?