Ugobe has officially filed bankruptcy. This is bad news for Pleo. That lovable little dino bot is no longer being produced. If you’ve got one you might want to refrain from hacking, just in case it’s worth something one day. As the point out at Engadget, another toy company might buy up the rights, but we doubt it.  At roughly $250 per unit, these things probably weren’t flying off the shelves.