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peterpyne
10,932 PointsWould there be any harm if the original content linked to itself as the canonical link?
Let's say we have website where users post reviews about clubs/organizations. The site is sectioned out by sub-domain based on the city that the organization serves. When a user reviews a club that spans multiple cities, it might be cross-published to the following sub-domains (because the content is relevant to residents of many cities):
Toronto.mysite.com Ottawa.mysite.com Windsor.mysite.com
Since reviews are user generated and come in frequently, it's not feasible to manually edit the duplicate content's canonical link to point back to one source - but it would be easy to have them all point to the same source, say, Toronto.mysite.com, because that's the city the user posted the review from.
Is there any harm in that, other than looking redundant?