I find dead links on ODP all the time and many categories have so few sites in them it's pathetic. The ODP is either dead or dying.
I'd say on the deathbed. It was run by Netscape before that was bought by AOL. AOL has since closed all software development for Netscape and only competes with itself for Internet Access. The Mozilla project is lucky because it got spun off into a non-profit and received financing from AOL, Google, IBM and Redhat to keep their doors open.
Without any money coming in, not much incentive to keep ODP open and with Google financing Mozilla, they won't put any effort into it.