Just how many shedworkers are there?

This is a question that I'm always asked by the media as well as fellow shedworkers (and the short answer is that I just don't know). But it's not just me, the figures for homeworkers, teleworkers, whatever you want to call them, are also frightening vague. Work2-0 has a good post on the fact that four recent separate polls have all given different results in answer to the question of whether working from home in the US and Canada is on the up, on the down, or neither. Well worth a browse.