Generally, I don't play with fonts (so long as I can decipher, it's OK for me
), but played a bit with the fonts as I got my Glo. I choose Amasis starting a new serie of books, already read 3 of them and suddenly, for the fourth, the font was huge (and I'd rather have small font) so I reverse to Kobo nickel, but the comma is quite like the period, and sometimes I have to look twice to understand (so much for the usefulness of the ponctuation
)