The web hosting industries are now switching to the next important trend. Many web hosts have started to offer multiple domains hosting account. What that means is that you can host multiple websites under 1 hosting account! You don't need to pay for a full account if you want to host more websites.
I strongly believe that these web hosts are throwing in the big offer as a marketing strategy to attract the consumers by exploiting consumers 'the more the better' mindset. Consumers don't realize that the 'large space' and 'large bandwidth' is practically useless, as they will probably never use most of the 'advertised' resources. They are simply being lured into the marketing gimmicks.