tedster - 4:36 pm on Aug 23, 2010 (gmt 0)
@tedster My mistake was using a relative canonical tag and missing the /
So google used the canonical to point at non existent pages (web master tools reported loads of 404 errors)
OK - but did it affect your traffic and rankings?
I maintain that Google should just be ignoring such errors in the canonical link tag. Sure - they can notify you in WMT, but it should not modify the way your site was previously indexed.