How are Facebook and Google the same? Algorithm choice

Let's start with what an empty like is. Empty likes are people who 'follow' by liking a Facebook page without any intention of engaging with the brand page or it's content. These could be social spammers who are paid to like some Facebook pages and therefore like others to throw off the spammer scent, or these could be friends or family who will like your page but never again look at 'Plumbers Unite', for example. Quality Facebook followers are far better from empty likes. The 'empty likes' actually work against FB pages. Essentially the algorithm of the feeds work the same way in FB as does Google search pages. It's all about relevance to the viewer/audience. If it is proved that people are interested in your link (terms, relevance) then it will show up in their feeds more. It's that simple. It's all about giving the audience what they want. In FB, the more empty unengaged followers you have in FB, FB will limit the number of your FB followers who see your posts, meaning it's wasted energy.

This video by Veritasium explains it really well. Pulling in quality likes is much more valuable than pulling in numbers. 
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However if you have followers who are clicking and liking your blog link and are going to your site directed from your social profiles, this is called Social Signals. Meaning it's directing traffic to your site, having carried through SEO in search pages. Also, if you have lots of fans, it means your posts will actually have greater reach across the biggest community Globally (FB), you just need to sustain their interest. So this is where the quality of your content is liked and SEO cross-over but both are classed in similar ways. It's a difficult balance of have and the reason a lot of large orgs look at the continuation of their strategy rather than one hit wonders.