I love this thing! You download it to your computer and designate a folder in your “My Documents” as your drop box. Any file you save to your drop box will automatically save to all your computers, phone even the drop box website.
I had heard about this from some of my business-savvy friends and I finally got on board and am using drop box. It’s totally free for the basic features. You can pay more to have more storage, but I have been really happy with the free version.
I don’t need a flash drive anymore to work between my computers. Download Dropbox here.