I would like to know how osc_get_canonical() works in osclass. I just bought mcfly theme, and it generates a canonical tag on every page irrespective if that page is a duplicate or not... even the index page.
The theme developer says this is good practice, but as far as i know, canonical tags should be displayed only on pages which tell web spiders about an exact replica of another page.
Besides, other themes that i have been checking does not generate such tags for every page either.
Can someone clarify please?