The bad news is that the copy of the Yahoo! directory hosted at this subdomain has gone as a result of a deliberate clean-up.
The good news is that the link directory ZOMDir is in theory a much better alternative (at least the number of broken links is much much lower).
The Maintenance Frequency at a Glance tool predicts the number of broken links on your website based on the frequency with which you fix broken links.
That's all there is to say about this.