How do we get started?

Reading recent developments on the Academic Jobs Wiki (and in particular its venting page), it looks like a few of the contributors -unemployed PhDs, adjuncts, lecturers, "contingent faculty" of all kinds- are interested in forming a union of some sort. I'm one of those people, currently teaching as an adjunct--that is, doing the job of an assistant professor for less money and benefits I used to receive as a teaching assistant--and I'm tired of venting and talking. I want to do something, but I'm clueless as to how we can get started practically. I'm suspecting though that I'm not alone and I'm fairly sure that there are others out there who know more than I do about the kind of action we can realistically consider (or not). To those people: I have created this dedicated space to begin a discussion about what we can achieve and how to do it. Despite the title of the blog, unionizing might just be one option among others, and it might not even be the best option. I honestly don't know, and that's why I'm hoping to gather other people's input here. Let's start from your comments to this first post and see if we can go anywhere from there.