Step to reproduce : 1. Open http://www.gentoo.org/doc/en/gentoolkit.xml#doc_chap4 2. Scroll down to the "glsa-check" section. 3. Try to follow the "Portage GLSA Integration Page" link. 4. 404 not found.
Looks like genone killed it when he retired 1.5 years ago or so. Fixed.