Node.js is neat, and I have contributed some things to the community, but it has a long way to go honestly if it's to be taken seriously in the performance and infrastructure realm. Articles like this don't help it's image either. It's as if a naive PHP developer suddenly discovered long-running processes, eliciting a chorus of rolling eyes from those who've written server software in the last 30 years.
I really hope for the sake of the project that the hype surrounding Node.js blows over and the hipster crowd moves on.
The PHP community is just now discovering long-running processes. Yesterday we made TYPO3 run on AppServer-in-PHP, and this simple setup change gave a 2-4x performance boost depending on complexity of request