Looking through the Guardian's Guide today, there is a list of blogs relating to fonts and typefaces:
I Love Typography
How to make a font, iPhone apps and who shot the serif
Letterology
A book design tutor on the complications of the letter T and a joke about Franklin Gothic's dark tendencies
What Type Are You?
Answer questions to discover your font (the password's 'character' by the way!). This takes a while, but it's fun.
Type Nuts
Type-themed wallpapers for desktops and iPhones.