[jhuckestein]

Taking advantage of multi-core platforms is easy. Just start multiple node processes and have the kernel take care of the rest. If you want the processes to communicate, there's a host of tried and tested IPC methods available.

The advantage of this approach is that when you write a function in Javascript, it is guaranteed that no other program other than the very function you are writing will modify your data in any way.

I've used GWT on a big project for about half a year. It's not over-hyped. It definitely has it's space. If you're working on a project with two people, you're just not in the market for it. GWT is all about stability, optimization and structured development. I don't want to get into too much detail here, but some optimizations that GWT gives you are impossible to achieve by writing JS code manually.