Alternates that are canonicalised
IssueMedium priority
Pages with an alternate that names another page as its canonical.
Why it matters
The alternate named is not the page search engines will show, so the pair contradict each other and the alternate may be ignored.
How to fix it
Name each alternate by its canonical URL.
Skitter runs this check on every crawl, and lists each page it finds with the evidence: the header, the tag or the link that gave it away.