I just want to add to the conversation something which hasn't yet been said but has been implied by some (Kristen, Roly, some others): BT's entry into the e-cig market is not guaranteed to be either a good or bad thing yet. However, we as a community of e-cig users have the opportunity to influence the outcome of their entry. We are already the market, we are already the suppliers; as this is the golden age of vaping, this is our first and best opportunity to try and control the terms of the future of the ecig market. There are at least three ways that this could go down:
1) The individual level. Indeed, this might be the most important way we each can influence the outcome of ecigs' entry into the public and national consciousness. We need to make sure that we are all the best advocates we can be for our product; this entails educating others about the reality of ecig use; this entails educating ourselves about the issues of the day regarding ecig advocacy; this entails making sure that we can articulate, with eloquence and expertise, the reasons we vape and why we think it is a good thing. We need to reach out to smokers, antz, and suppliers in order to make our voices heard. The individual can also use his or her own expertise for the benefit of the ecig and ecig community; those of us versed in law, communications, business, engineering, science, and so forth, all have a role to play in creating the future of the ecig community.
This also means that we need, as a community, to think critically about the issue at hand. One-line doomsday predictions about how BT will poison us all or will drive out all competition doesn't add to the conversation and lights fires that those of us working for the ecig community have to spend time and energy putting out. One-line overly optimistic accounts about how this will save us all does the same thing. And every one-liner that outsiders read only risks creating the perception that we, as a community, have problematic logic and reasoning capacities. Now, I'm not saying, only long posts; I'm saying that we should all be doing our best to add to the conversation. If one of us has genuine worries and fears, they should be allowed to articulate that, and they should be encouraged to articulate it with as much warrant and grounds to back it up as they can muster.
2) Collective advocacy. Groups like CASAA are of utmost importance; making sure that there are chapters of the group or other organized advocacy collectives in your community helps safeguard the ecig against tampering which would harm the vaping community.
3) Governmental practices. A lot of folks on this forum remind me of militia-types who don't trust anything the government does. Or big corporations. Or any large collective of human beings. BUT, these folks make the mistake of treating all of these large-scale entities as if they are monolithic agents with a one-minded pursuit of easy to name goals. The truth of the situation is that these organizations deal with tensions both internal and external to their particular authority. Internal tensions mean that we can't reject out of hand any possibility of working with or within governmental or corporate organizations as if all of those organizations aren't made up of individual beings with their own interests or as if anyone who works within these organizations are themselves evil. External tensions mean that we can't just write off any battle that needs to be fought at the collective level as already won or lost.
What I'm trying to say in this overly-long post is that the real implication of Big Tobacco's entry into the world of ecigs is that the window where we have the most influence as individuals is rapidly closing. As more and more money comes into the market, individual action and consciousness-raising will have to become more collective in order to compete with those collective interests which would shut our community out of controlling the future of the ecig market. We don't know whether or not this will be a good or bad thing, but we can control what we do to make sure we have the best levers of influence over the outcome.