i thought like @sjennon about the purpose of different social media platforms. My disadvantage i'd never used one of the platforms actively because of their purpose often to just waste time with a simulated "socializing", not person to person. On Steemit the incentive driven culture motivates people to think before they unload something out of their brains and i think also can leverage someone to constantly learning instead of just pushing the first thought out about something or someone without further thinking.
But i think in the end FB is for the more spontaneous, sometimes senseless self directed presentation and on Steemit the most are here to create value for others. We have also many self directed content, but also that is incentivized for high quality because Steemit community rewarding with real money and not just fake likes and friends. And with creating value with such a multiplicator of hundreds thousands of people and soon millions it could simply overtake all the others because that's like a huge treasure chest for everyone worldwide, with much more valuable information than crappy things. This value proposition is in my opinion the biggest differentiator what drives Steemit much further than all the others.
To take it more on the philosophical and idealistic side it could even improve the overall knowledge worldwide additionally to just entertaining, blaming, tweeting, griping, shouting which is also possible on Steemit in the comment section or in thematic blogs. Finally you can upvote a simple cream tart with strawberries if you like it. It's your choice what's valuable. The only thing why others don't use such system is in my opinion greed to maximize earnings for only one and the reality was always disgusting for me, a gut feeling which kept me from using other platforms. That could a big reason for many to change their mind and join Steemit!
I really hope they will then!
Thanks for the amazing, elaborated comment! You used all the magic key words I had in mind when writing this... Think more...Value...Culture...High quality...Real money... I rest my case! Steemit has all that, that's why it should get on top of all other social media, eventually -and hopefully soon ;)