This is a FUSE filesystem to make it possible to mount certain models of Motorola mobile phone under Linux.
To use it you'll need to have FUSE, libusb and p2kmoto installed on your system.
FUSE and libusb are probably available as part of your Linux distribution.
p2kmoto is less common. It's part of moto4lin.
You'll need the most recent version from SVN as it has some improvements over the released version.