app:edited for content/@src

["Alex Milowski" <alexml@xxxxxxxxxxxx>]

I've been consistently wanting to know when the media pointed to
by a [atom:]content element with a 'src' attribute was last modified.  While
I can use a "HEAD" request to get that information, I'd love to have it
in the feed as a "weak" version of that information.

One simple solution is that an implementation could add an "[app:]edited"
attribute to the [atom:]content element.  For example:

<atom:content src='myimage.png' type='image/png'
app:edited='2008-04-24T15:53:00-07:00'/>

Obviously, a HEAD request is the most robust because I could get and
use the ETag
headers.   That said, if I just got the feed, the app:edited attribute
for media referenced would be useful and possible remove the need for
additional HEAD requests in
certain situations.

Thoughts?


--Alex Milowski