Oh, I see.  It's a simple reason.  Thanks for pointing it out.  I will be
careful.

soichi

2011/6/2 Tomas Hlavaty <tom@logand.com>

> Hi soichi,
>
> > May I ask why I shouldn't do this ?
>
> data protection, privacy.  Some people don't like being spied on, esp by
> untrusted third-parties not related to your website content.  But this
> goes beyond your original technical question.
>
> Cheers,
>
> Tomas
>