I was just redesigning one of my sites and was thinking seriously about using Typekit. This makes me rethink my strategy and will probably be a hard hit on Typekit.
Does Typekit have any advantages over Google? Google has better infrastructure, a simpler impelentation (no signup required), and a budget to license a wider variety of fonts.
They sell non-free fonts that allow font-face embedding in their licenses. Google will only offer free fonts.