First this platform, then that one.
I completely understand. (Go and look at Ello and App.net and let me know what you think.)
To my mind, though, as much as Twitter, Facebook and LinkedIn might give you exposure, it's meaningless without something more -- i.e. a blog, video or podcast.
I've watched, listened and engaged but for me it's not the most notorious, humorous or enlightened. It's the people that produce the most remarkable content.
What's your plan?