Create an “.htaccess” file in the folder you want to be cached and add the following to it. This will have the effect of caching your site for a week.
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.