| | Some Tips..
If you want to host multiple websites get a reseller account. I've got a number of sites either in development (or decline!) and can highly recommend Hostgators reseller accounts. I haven't had any major woes with them for close to 2 years. For $25 a month I get 25gb of storage space and 250Gig of bandwidth, unlimited domains (which I manage using the included Web Host Manager-WHM) and the really useful script installer Fantastico. Basically Fantastico has a whole bunch of click to install web scripts like content management systems (Drupal and Word Press for instance) and a pile of other useful apps.
You can never over research your webhost. Google webhosting forums and look for user feedback on your potential host before you sign up.