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I have added the following URL to my profile as an article:

The page gets retrieved ok during the initial edit, but the link that gets placed on the rendered profile page is:

This just shows an error, so I took just the last part (, which is a valid link, and added it again. This still gets re-written, this time as

This version of the link gives a 404 error.

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up vote 8 down vote accepted

When indexing the document, we respect the rel=canonical meta tag. In the case of the document above, it's broken. It reads

<link rel="canonical" href=""/>

...which is interpreted as a relative URL, because is lacks a scheme (http). I'll see if we can work around it. If you happen to know the webmaster at, ask them to correct it.

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FYI, I have contacted the webmaster (via the email listed on their website) with a link to this very question. Let's see if they respond. In case they do (and don't do so here) I will add their reply. – Bart May 29 '12 at 17:40
And a reply has been received. I quote: "Thank you Bart for the email. We confirmed this and are fixing it. We will let you know once the fix is deployed." – Bart May 29 '12 at 18:24
Ah, excellent, thanks for contacting them. I had assumed it was just using redirect headers to decide what the final destination page was. So now I have learned something new about canonical URLs too :) – Mike Houston May 31 '12 at 9:44
I can confirm that they've fixed it and the link is now working correctly. Thanks everyone! – Mike Houston May 31 '12 at 10:03

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