Would i have to...

[jbknight3.jimdo.com]

Would I have to sign up for a second JimdoPro account if I wanted another site for another person?(my dad)

OR

Could I just buy a JimdoBusiness account and get the same result just with better benifits? or is business not have the ability for 2 different sites, and only has the ability to have the same site with 2 different names.

[powen.jimdo.com]

JimdoBusiness is one site with two domain names, so if you want two separate websites, you should get a second JimdoPro site.

[jlazo32.jimdo.com]

it would be much better if you purchase another one... to avoid problems...