A visually impaired person in our church reads The Book of Common Prayer (basically, the Episcopal Church's missal) on her iPad. The Episcopal Church publishes a large-print edition, but the magic here is that she can make the print as large as she needs to. It's part of a free app called Wayfarer, and is available in the iTunes store.
My suggested general term for this sort of scamtrolling might be teergrubing. The idea is to waste as much of a scammer's time as possible. This is not new, but the examples cited in the article are very funny.