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Linking ethically (and for SEO): canonical and nofollow | Online Journalism Blog
“Cross posting: use canonical links
It’s not uncommon to post a copy of your work on your personal blog, or for someone to ask if they can republish on their site something you have written on yours.
In these cases, however, Google (or Bing) can actually penalise one of those sites for hosting duplicate content.
After all, how does it know that the content hasn’t been ripped off?
Well, you can tell it with this bit of HTML:
rel=”canonical””
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What The Guardian needs to do to get in the black – Digiday
“bringing together the audience-insight and customer-data teams together, centralizing them in order to drive more relevance in advertising and in editorial, and so turn readers into paying subscribers.
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Introducing Audience Optimization for Publishers | Facebook Media