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by goodgoblin 6619 days ago
What does he mean by 'Canonical Issues'?
1 comments

If you don't redirect www. to . or vice versa, then robots can see duplicate pages, which can be bad for SEO.
It is a bad practice in general. Most of those issues that are 'bad for SEO' fall under bad practices in general.

There are few tricks, and just common sense concepts of having proper return codes, redirection and site structure.