Let's be fair here. Shared.com is in the business of producing and distributing crap content. That's a subjective term, but it's like the supreme court ruling on pornography, you'll know it when you see it. These guys most likely "skirt the line" to just operate as a mediocre and crappy content distribution network, that at scale, makes a lot of money because there is a certain subset of the population that will eat…
There's a lot not to like about Facebook and Uber, but they both replace systems that were much less reputable (i.e. ad networks that delivered all manner of deceptive and malicious ads, or taxi operators that were low quality and dangerous).