That's why I use DropBox-- I actually work on the document in DropBox when I'm mobile on my tablet and in the DropBox folder on my home computer, so I'm always working on the same instance of whatever file I'm editing. I back up reguarly to about 3 different physical locations. The nice thing is, if the file has been loaded from DropBox into TextMaker HD on my tablet, if I don't have network I can keep working on the file as is truly downloaded. I just need the network to save it back to DropBox. There are apps that will mirror DropBox locally like happens on the permanently connected computer, but I don't need that. Google Office is another fine free alternative. I do, however, prefer to have my software local, and for me they just aren't as feature rich as I need and compatibility isn't perfect, though I will admit it has been a very long time since I really gave the Google Apps an extensive test. For many people, however, they are going to be fine.