Howdy! Welcome to our community of more than 130.000 members devoted to web hosting. This is a great place to get special offers from web hosts and post your own requests or ads. To start posting sign up here. Cheers!
/Peo, FreeWebSpace.net
The main reason for doing this is to maximize there sales which ultimately help then in making profile on bulk sales. There is another reason on the same time that they try to cover the expenses so they wouldn't be paying from their own pockets so simply they just open it to customers :)
Search for latest promotions by different hosts, I'm sure you will get many options to go with. But you should be sure about the services of the hosting company before you signup.
These kind of offers are only reliable when these are offered by major host who have a trusted name in the industry but make sure you read the TOS before going for it.