One thing I can assure, which is that, you can feel more comfortable reading
some sort of fonts. And perhaps that can make you feel like you desire to
read more, and you increase you "overall performance" XD at reading. Like
some sort of placebo effect.
It happens to me with this font, and I wonder if you can tell me what font it
is and if it is free (I mean, as in freedom)
http://www.ubuntu.com/support/community/web-forums
I truly feel comfortable reading that sort of font, perhaps, it's just a
placebo...XD