There's a huge army of teams who aren't competent to do both, judging by the number of sites that fail completely if the client isn't trusting and running javas

There's a huge army of teams who aren't competent to do both, judging by the number of sites that fail completely if the client isn't trusting and running javascript. Node.js seems like a good solution for unobtrusive enhancement, making reliable semantic resources that may still optimize out many server round trips with mobile code.