Probably a bit obsolete to comment it now, but from how I understood it, it is your personal blogspace that will benefit from those clicks if you set it as a canonical source.
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We're a place where coders share, stay up-to-date and grow their careers.
Should we be doing this for real?
Posting all our content from a personal blog to these other platforms? won't they rank on Google instead of us and we will disappear?
Probably a bit obsolete to comment it now, but from how I understood it, it is your personal blogspace that will benefit from those clicks if you set it as a canonical source.