Fwd: Re: RDFa and the OpenGraph Protocol

(shared with permission)

-------- Original Message --------
Subject: Re: RDFa and the OpenGraph Protocol
Date: Mon, 11 Apr 2011 20:11:14 +0000
From: David Recordon <dr@fb.com>
To: James Graham <jgraham@opera.com>, Paul Tarjan <pt@fb.com>

Hey James, adding Paul who's worked on OGP as well.

We're consciously accepting the og: prefix without the xmlns declaration
as we find it to be what the vast majority of implementations around the
web are making use of. I don't think we have an issue with recognizing
other prefixes if they use the correct namespace declaration, just
guessing we haven't taken the time to implement it yet.


On 4/11/11 12:59 PM, "James Graham" <jgraham@opera.com> wrote:

>Hi, I hope you are the right person to contact about this; I found your
>address on some OpenGraph Protocol slides on developers.facebook.com.
>The subject of the best way to incorporate RDFa inside HTML 5 has been
>subject of much discussion in the HTML WG at the W3C. As a result, I
>the Facebook implementation of OpenGraph protocol and noticed that it
>from the RDFa spec in important ways. In particular the linter provided
>at [1]
>seems to recognize properties with the og: prefix whether or not there is
>corresponding xmlns declaration. Also, it appears not to recognize
>with a different prefix even if they are bound to the correct URI.
>Is it possible for you to confirm whether these deviations from the spec
>considered bugs in the Facebook implementation that you plan to fix, or
>deliberate design decisions? If the latter it would be really helpful if
>could explain some of the thinking behind these decisions. I of course
>understand if it is not possible to share any of this information for
>commercial reasons.
>[1] http://developers.facebook.com/tools/lint

Received on Tuesday, 12 April 2011 11:24:04 UTC