For each domain name you host on 2Guys1Server, we'll throw in enough space to host your site (250Mb-500Mb), an SQL database & loads of support tutorials to help to get things like e-mail, forwarding and other overly complicated web stuff. While we won't be able to help out to much with the code itself, we'll try to take the load of issues hosting can produce.
The reason we can offer these mate's rates is because we're not looking to run it as a proper commercial server. This means that the more members that join, the cheaper we'll be able to offer our server out. Unfortunately this means that we'll be initially just hosting friend's websites and good projects.