I have a bunch of spam defence mechanisms up at the moment. One of the less high tech defences is that I block all mail labelled ‘high priority’, because in my experience only spammers were using that. And none of the people I regularly mail with use it. But some people who want to contact me about the blog might. The main purpose of this post is to note that you shouldn’t use ‘High Priority’, because I’ll probably not get the message.