Re: 'Age' for webpages

What about dynamic HTML pages? Is there any mechanism for retrieving the age
of their contents?


On Fri, Jun 4, 2010 at 9:05 PM, Aryeh Gregor
<Simetrical+w3c@gmail.com<Simetrical%2Bw3c@gmail.com>
> wrote:

> On Fri, Jun 4, 2010 at 4:03 AM, Merin Tresa Willy <merintwilly@gmail.com>
> wrote:
> > Is a third dimension - 'age' necessary for webpages? Will its inclusion
> help
> > search engines and the like, to retrieve pages containing up-to-date
> data?
>
> The HTTP Last-Modified header can be used for this.  So can <time pubdate>:
>
>
> http://www.whatwg.org/specs/web-apps/current-work/multipage/text-level-semantics.html#attr-time-pubdate
>