Wordpress is available in two tastes, one is single user and another is multi user abbrivated as Wordpress MU. With wordpress MU installed on your server visitors can start creating their own blogs like visitorname.sitename.com
I have installed and setup many Wordpress MU for many websites, I also have experience developing themes for wordpress MU.
Garry developed for me a wonderful website at amazing rates, he meet strict deadlines and replies your mails very quickly..
