Originally Posted by Aquinus
The hostname of the machine is less important since you're most likely hosting by "IP" (normal DNS lookup to IP,) where Apache can be setup with "virtual hosts" where something.someplace.com and foobar.someplace.com might both point to the same IP, use port 80, but have different DNS addresses.
In short: No, the hostname isn't that important for your purposes.
where should I be using the no-ip hostname associated with my dynamic IP? I have the no-ip updater software for ubuntu to always keep my ip up to date with my hostname as my apt complex will not do static ip. They claim they do not block ports. I have 6mb down and 3mb up