>Twitter (the service, not the company's) secret sauce is: You can have a public platform, using an identity you choose for yourself, to broadcast snippets of information.

Parent means their secret, money-making sauce. Not just what makes it appealing to some people.

>Where do you evolve this? Blogger, Blogspot, Livejournal, Tumblr, Medium, they're all in this same space

And 90% of them are almost dead.