Howtoforge posted a tutorial about setting up virtual hosting with vsftpd and MySQL on Debian Squeeze
Vsftpd is one of the most secure and fastest FTP servers for Linux. Usually vsftpd is configured to work with system users. This document describes how to install a vsftpd server that uses virtual users from a MySQL database instead of real system users. This is much more performant and allows to have thousands of ftp users on a single machine.Virtual Hosting With vsftpd And MySQL On Debian Squeeze
