I think is this a neat concept. Unfortunately it'll probably lead to unskippable, unblockable advertisements that you won't realize you've read until its too late.
But you can develop a lot of cool lightweight tools since it's something you could implement fairly easily on your own if the API becomes tainted.
I don't infer predatory intent by the creators, but the above seem far and away the largest groups of likely customers.
What I imagine would prove more successful due to viral potential while also being more socially constructive is if the same technology were used to simulate famous historical figures. Tweet the most poignant quote from your conversation with Frida Kahlo. Or Dostoyevsky... though that would probably need to be an FB or blog post.
But you can develop a lot of cool lightweight tools since it's something you could implement fairly easily on your own if the API becomes tainted.