Self-referential canonical tags

 It is best to use use self-referential 'canonical' tags.


These are canonical tags on pages that point to themselves.


This makes it clear to Google's search crawler which page you want to have indexed. For example, deciding between 'www' and 'non-www' URL's.


The 'canonical' tag for my tips page is:


    <link rel="canonical" href="http://bbingo.xyz/techtips/" />


I had wrongly just put 'canonical' tags on versions of my pages that were not 'canonical'


There are more tips at: bbingo.xyz/t


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