Logitech arguable makes the best mice you can buy. I guess it tires of doing so, as the Cube mouse-plus-PowerPoint-clicker is an ergonomic war crime and peripheral abomination. At least it's small enough to purge from memory.
A "compact" pinky-long touch mouse meant to be used during presentations, too.
People with doll-sized hands, businessmen, masochists, all of the above.
It looks like a bootleg Chinese copy of itself—a chintzy glossy laminated block.
You can move the Cube around your desktop like any other mouse, except you rub its back instead of rolling a wheel to scroll.
Most of the time you move the Cube in real life, there is some correspondance between it and the cursor on your screen.
The Logitech Cube is brutally uncomfortable to use, its clicking mechanism is shoddy and hard to trigger.
Logitech's download-only software that claims to improve scrolling smoothness made no difference—still jerky and bad!—and is only available for Windows.