Wordpress is simply THE best blogging software available today and has been so since what seems like many years now.
http://www.wordpress.org

Wordpress is multi-users enabled, and to allow AdSense Revenue Sharing for WordPress all you need to do really is add this piece of PHP code to your template and simply replace the bolded variables with actual bloggers’s names:

As a PHP code:
$author = get_the_author(“login”);
switch ($author)
{
case ‘James’:
$google_pub = ‘pub-xxxxxxxxxxxxxxxx‘;
$google_channel = ‘xxxxxxxxxx‘;
break;

The rest is not here anymore, cry for help if you need it.