Wordpress mass hosting
Wordpress_1.5.1.3–4 has a little script to assist setting up loads of blogs on one machine. Try it out by putting wptest on your 127.0.0.1 line in /etc/hosts:
debian$ sudo sh /usr/share/doc/wordpress/examples/setup-mysql wptest
Constructed database name and user: wptest from wptest
/etc/wordpress/config-wptest.php wrote
Goto http://wptest to setup Wordpress
Pretty easy huh?
Though, I need to improve this hack and migrate it to dbconfig-common.