Any website is a reflection of your business. If it’s cheap and unreliable, it’ll say that to your potential clients. Recently we’ve had client’s who’ve been burned by other web designers and their hosts
Restricting the ability to sign up to new wpmu blogs is unfortunate but necessary to get away from all the spam bloggers out there. They make life hell for everyone.
The following is the basic procedure for installing Wordpress mu with more than one domain name, so that you only need one install to control several domains.