If you're looking for it, you can easily identify type that has been designed to be read, and type that wasn't.
I don't know if this is necessarily true, but for years it seemed to be the case that people just gave up on designing type for web. We designed type for print for hundreds of years and now we do so much of our reading on screens I think it's great that designers and engineers are investing time to make it better.
Thanks for the share. Really interested in this area at the moment, specifically around what it is about fonts that make people happy, looking at the science behind serifs, font sizing, measure, leading, tracking and all that stuff. It's an absolute rabbit-hole though...
Speaking of, if anyone has found any other good studies, books, films, programmes, whatever about the scientific/psychological/sociological/linguistic side of type selection, then please post them up here!