Thanks for sharing, I certainly think it does, it also helps students without reading disabilities, the fact that the technology is evolving rapidly I am optimistic to see a nearly human audio content of web text content available at easy for everyone.
I've been using it for around 3-4 months with different sites. For linkedin it's been a bit more than 2 months. They are a good startup and they've been improving a lot their services. They only count successful requests so you don't have to worry about fails.
If you get a bigger package they will raise your limits I guess. But I suggest that you contact them directly
