it's not an acceptance or rejection thing, they post everything.
you get paid 40% of their income from your pages (so if someone clicks on a link from your article and buys something, you get paid.)
i just got an email, they are paying special stuff this month, like $1 per article or something.
to find out what you have, go to my helium, then click on the left sidebar "my earnings"
Follow Mothering