Ok that's a bit of a stretch, but you can run your own little links directory at a slighly smaller scale using this cool little applciation I have been hacking away at over the past few months.
I have still a bit too go in terms of it being a version 1.0, but here's a sneak peak at my directory links management software (that's a mouthfull isn't it, no idea what I should call it, feel free to suggest).
Some of the cool features include: multi-site support on a single installation, unlimited categories, friendly-Urls, unlimited links, content associated to categories (used as knowledge base articles), multi-language support, icons for categories, last updated icons on categories, user-submission and registration, listing counts on categories, images on listings, associate a listing to multiple categories, user ratings, user comments, templating to allow for easy web design modifications.
I also have role based security so you can hide categories and listings based on user-permissions but its still in the works.
I'll hopefully be starting some sort of a beta testing period once I finish the installation wizard, hope to get some feedback from you guys!