A lot of people read Gower's blog as it has some really useful expositions of undergraduate maths, which he makes available for anybody who might find them usef

A lot of people read Gower's blog as it has some really useful expositions of undergraduate maths, which he makes available for anybody who might find them useful. In that sense I think he is justified in not providing a reward; you don't have to do the test if you don't want to anyway. He will no doubt post later with the actual writers' identities.