Innovative online storgage business model

I just stumbled on a new service from a company called Streamload. It essentially provides online storage for files, but with a unique twist on the business model. Instead of charging for the amount of total storage, Streamload users pay for the amount they download. Primarily aimed at heavy music users, this service could also be a cheap alternative to backup limited amounts of crtitical files. Zero cost to store data on their servers and in the case you actually need them to be backed up, you pay for the download. Not a bad idea.