This article is a bit old. But interesting nonetheless.
Here’s an excerpt:
And the whole legibility thing. Number one, I feel strongly that it got way overstated. I can think of one or two incidences in my entire career where I would say you couldn’t read something, and at that point it was sending a different message. People read what they’re interested in reading. Recently, researchers gave a bunch of college students information in strange fonts, from Monotype Corsiva to Comic Sans, and another group was given information in Helvetica. The people reading the stranger fonts remembered more and did better on tests later.