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Good for kids or a backup. Quidco of £3.50 is available but in order to receive £3.50 cashback a PAYG phone handset has to be activated and topped up with credit, which is fine if you use a new O2 sim.
Just the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright brothers. But they also laughed at Bozo the Clown.