It looks like Pat Cavit who runs Zilla Smash has coded a nifty little plugin that allows WordPress to authenticate against an LDAP server. Needless to say, this has great potential for universities and organizations who have LDAP based account provisioning and would like to offer blogging to large numbers of people.
So here’s version 1.01 of my LDAP Authentication plugin for WordPress 1.5.1. Note that this will NOT WORK with any previous version of WordPress. Installation is pretty simple: download, unzip into wp-content/plugins, activate, go to the “LDAP Options” menu and set up your LDAP information.
In the very near future we will be testing this LDAP plugin with WordPress MU. Check back for updates. We’ll post any code changes that are required for MU.

That’s pretty cool, but you may want to take a look at what Billy Gray’s doing over at http://quicksilver.montclair.edu/blog/?p=527
I haven’t had time to update that plugin for quite some time and it doesn’t appear to be nearly as flexible as some folks need it to be.
Thanks for the info Pat… I work at Plymouth State University, and we are investigating a blogging solution for about 13,000 users. There are very few that integrate with LDAP, so if we can get the plugin working with MU, it will tip the scales pretty heavily towards WordPress.
Has there been any progress toward getting the LDAP plugin to work with Wordpress MU?
What I want to do on my blog, is every few hours take the oldest post and move it to the
front of the queue, all automatically. Anyone know if there is a plugin that can do this or
a simple way to set up another plugin to do this (use my own feed perhaps)?
Thanks.