There's been a bit of discussion about VASSAL in the ASL community, started by this blog post (warning: auto-play music). The central hypothesis of this is that ASL is a social game (to which I agree) and that VASSAL gets in the way of that (to which I disagree very strongly).

I am a digital native. I have been on the internet for about ten years now, I used Twitter before it was cool and IRC greatly helped ...