At the request of Sumana Harihareswara, editor of GNOME journal, (and with her help) I've written "Fonts in GNOME 3: Cantarell, Tweaking, and Trailblazing" for the special GNOME3 edition. It's an overview of the significant changes happening in GNOME3 building on the past few years of efforts along with some tips on tweaking fonts and a look at the upcoming challenges and opportunities. Hope you find it useful !