Viewport Meta Tag for 6.x versions?

Hi,

I was working on a Responsible site and I've found my

@media all and (max-width: 680px) { ... }

don't run on all the small devices.

Some drupal-es IRC guys talk me about

<meta name="viewport" content="width=device-width">

and that's the right answer ;-) Adding it at page.tpl.php I've got what I'm looking for.

But I'm not sure if it could be desirable to update page.tpl.php with this code/patch or there are some reasons to not, like this:

Stop using the viewport meta tag (until you know how to use it)