I'd never trust my stuff to a "cloud." Won't even use remote-backup services. I suppose there are some practical applications such as for bookmarks, photos, documents, etc ...but for a dedicated solution (an all-inclusive data storage solution), no I'd never use it and I don't think it will get to that point. Plus, ISPs are already complaining about the bandwidth abuse they're taking due to this massive cultural shift to online streaming media, could you imagine the load on networks if everyone shifted to cloud technology?