must use own domains?(adknowledge)

I recently registered my domain name with adknowledge without a problem(for a blog).
But today after creating my second blog with blogger I tried it without my own domain
and just using the blogspot default url which I thought would work because I read it worked with adsense.
No go charlie it won't accept it.
I was wondering if there was a legitimate way around it or If I could get some suggestions on where I could get a pay-per-click service
for a blog without my own domain if that even exists.LOL

 

if you post it in tech area in forum, you may get better help

 

Thanks and I hope I don't get accused with spam.lol

 

Many sites dont accept blog without A domain name!
You should buy one by visiting yahoo business. It cost you just $1.99!