Chapter 5 says "emu.gentoo.org". This should be replaced with "toucan.gentoo.org".
Thanks Tim for fixing this bug so fast! :D
And again: http://www.gentoo.org/proj/en/devrel/handbook/handbook.xml?part=1&chap=2#doc_chap8
Fixed.
Actually, it should have been changed to 'dev.gentoo.org'. Servers should never be referenced by their direct names -- we deliberately provide abstracted service names to ensure things like this don't happen.