“I’m writing this, somewhat shamefacedly, under a pseudonym, because I’ve seen many examples of the threatening emails and online trolling that would immediately target me … [and] I understand that anger … But artists will work for very low pay for as long as there are more people wanting to make art than there are audiences willing to pay them enough to live on. And we have to talk about it. So how do artists make a rational decision about whether to take on low-paid or unpaid work?”