British banks are generally not accepting the notes and technically, they should not leave the country. It means the shape of the cube alone is not enough to protect it from being copied. Patents protect inventions for a certain amount of time, while trademarks intellectual property owners exclusive rights to their designs.
Facebook said that it planned to create a measurement council to give businesses a say in the development of future metrics, and that it had also created a new internal review process. The latest mistakes might appear relatively minor in nature, but one digital marketing expert said they undermined confidence in the social network.