cpm for low traffic site??

Hi
i ‘ve been looking at about all of the cpm programs
but they accept only high traffic sites
is there any cpm program that accept a site with 500 pageviews/day?
i only found pay-ads that dont need to approving.
i had another question.when a cpm site accept one site can we use the same code for other sites without submitting others?
thanks.

Original post by amir7