Screaming Penguin - Source Does Matter

Fair Volta points, but I don't think it could have come out two years ago, because once again Microsoft did not innovate, I don't think, rather they copied (the approach, not the code). Which makes sense to me, but it appears (per what reviews of Volta have stated thus far), that they also did a crappy job of it - it doesn't trim unused stuff, etc.

I think Ajax is here to stay, regardless, and so it makes sense for MS, and others, to be looking at the same approach GWT innovated and put forth.

Running in a browser *without* a VM for Flash/Silverlight/YouNameIt will matter. That is how my GWT apps run right not on my iPhone, and my Wii, for example. The VM thing just can't keep up - and as the amount of widgets and offline and so on start to increase for browser based apps, the lines will blur even more.