>Why should a GET never modify data? Because that's what the HTTP spec says. Wander off-spec, and you will eventually have problems, like the unfortunate gov d

>Why should a GET never modify data? Because that's what the HTTP spec says. Wander off-spec, and you will eventually have problems, like the unfortunate gov department in the article. http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol#Safe_methods http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol#Saf... Relatedly, idempotency is a too-poorly understood concept.