The only confusion over the wording on the front page seems to be over: "Almost no function in Node directly performs I/O, so the process never blocks". Which can be correctly read as: "Almost no function in Node directly performs I/O, so the process never blocks on I/O". But my English teachers would have told me that's too much repetition and not necessary.
If your goal is to appeal to "less-than-expert" programmers, this is exactly the kind of point where you want to be crystal clear. Blocking on CPU is the kryptonite of evented servers. If someone is new to them you probably cannot reiterate that point often enough.
On the front page? Really? I'd expect that on a more detailed tutorial, but to get people interested in a technology, I completely disagree.
You don't see Apple plastering "ONLY AVAILABLE IN THE USA" on their pages about iCloud music storage for exactly this reason - you want to get people to say "Hmm, that sounds cool" before introducing them to the caveats.
