Ok I think I've got this right:

Subdomain:

test.jokeawhenever.com

Parked domain:

switchfootdesign.com (points to jokeawhenever.com)

Additinoal Domain:

blahblah.com (points to the files in /public_html/blah

Basically the parked domain is free, and it only points to your main site.

The additional domain, points to another directory, which appears as the root of the domain. So this was you can effectively host two websites that appear to be totally independant on the same account. There is a $2.50 a month fee for this. The First two are free.

- Ed