Review on Rumpus by Chris Castro

The interface of rpms are easy to use, not much configuration needed for basic usage as long you have some knowledge about linux system administration basics (like package management).

You can also install it in your local computer if there's no internet connection available at that time which makes me think its too complicated compared with other options out here like dropbox or google drive etc.. I don't really find anything bad so far but maybe i'm missing something since this service has been around longer than others. File sharing between multiple users without having them connected via VPN/SSH would be great especially when they're using different devices such as laptops and desktop pc.