Is there a spec that the browser must stay where it is? Otherwise I would just use a form targeted to a hidden iframe. Still it's not usable here since you won't see your vote or comment or anything without reloading the entire page.
Also, a tiny bit of JS and no ajax can solve that easily.
> Also, a tiny bit of JS and no ajax can solve that easily.
No disagreement from me that JS solves these issues.
There are edge case clients that would need to contravene this. Most of those clients don't support JavaScript (or in many cases video) in a meaningful way, making the whole thing moot.
No, but in practice all major browsers (Firefox, Chrome, IE, Opera and Safari) do so. And it's not like the implementations of JS and its APIs never differ.