So, when I went to put in my new domain name it told me I'm not allowed to do that. So, after some google searching, the only thing my account is capable of is a single domain name and zero parked domains.
The worst thing about it is I have to pay 5 more dollars if I want to change the domain name on my account.
hmmm... obviously I'm not allowed to have "unlimited sites" like they said. Just unlimited subdomains, which is more like a supplement to a single site.
The real plan with unlimited sites is apparently the "baby" hosting package and above.
I don't have a choice -- I have to pay the 5 dollars if I want to change my domain name, but I thought I'd inform other warriors here if they're thinking about getting a hosting plan from hostgator.