Dropbox is a software that allows you to backup and synchronize your files online and across different computers automatically. Initially you will get @GB of online storage for free, with up to 100GB available for paying customers.
Dropbox allows you to synchronize your files accross Windows, Mac and Linux computers and even with mobile devices such as iPhone, iPad, Android and, added to the list just recently, Blackberries.Even if you work on the files in your Dropbox when you’re offline, Your changes sync once your computer gets online.
With Dropbox, Sharing files is as simple as a few clicks. You can share folders and allow a number of people to collaborate on your work. You will be able to see the changes made by the other people instantly. You will, however, have the full control as to who will be able to access your shared folders including
the ability to kick people out remove the shared files from their computers.
Security & Privacy is not an issue with Dropbox. Only the people you invite will be able to access your shared folders and data are transmitted over encrypted channel (ssl).
Ifever you have modified a file in you Dropbox folder before Synchoronization, Dropbox autmatically creates two versions of the file indicating which version comes from which computer or device by adding the name of the device into the file name.
If you want to know more or try Dropbox yourself, click this link: https://www.dropbox.com/