Advantage of being a new member?

As the title says, is there any advantage of being a new member over having an old account?

From what I understand, you appear in a list for best selling new author for 1-2 months. But is it worth it to appear in that list, does it really boost sale in any way? And is there any other advantage for new sellers?

Last thing, is a seller consider new from the time the account was created or from the time the first ever item/song is posted online?