Giving rationalists more tools to convince discussion partners is good, and in particular, I’ve found that being able to frame your thinking in terms that the theist will already accept is effective. (Salespeople will tell you that’s no surprise.) But there are two caveats. First, I think we (atheists) often focus too much on debates, as opposed to setting an example through long-term social contacts with theists and living a good life in front of them. I’m often hesitant to place great value on debates in terms of convincing the discussion partner or the audience. My favorite stat: when Hitch and D’Souza met in Colorado, they interviewed audience members before and after, and even Darth Hitchens himself scored only a 3% conversion.