Hi Netfly,

How are you proposing to share the revenue? i.e. what would MetaMod actually have to control in order for that to happen?

Could it be as simple as:
1 - set up a module that contains your ad code
2 - set up a module for each author containing the ad code that embeds their payment details or whatever
3 - set up a MetaMod, assigned to K2 item pages, that does an 80:20 random split between showing the module with the ad code for the particular author, and the ad code for *you*?

If that's the case, then it should be easy to set up as long as you don't have a large number of authors to maintain (e.g. a handful of authors would work very well):

$k2 = JomGenius("k2");
if ($k2->check("pagetype = item.view")) {
  $my_module = AAA; // replace AAA with the module id of the ad module for YOU
  $authors_to_modules = array( XXX=>BBB, YYY=>CCC, ZZZ=>DDD);
  // replace XXX, YYY, ZZZ with the user ids of the different K2 authors,
  // and BBB, CCC, DDD with the module ids holding their advertising codes.

  $r = mt_rand(1, 5); // random number between 1 and 5 inclusive
  if ($r == 1) return $my_module; // 1 in 5 chance that your one gets shown
  // otherwise, the author's one gets shown:
  $author = k2->info("item_created_by");
  $authors_module = @$authors_to_modules[$author]; // gets it from the array above
  if ($authors_module != null) return $authors_module; // make sure it's valid.
}



Ok, so the only lines you have to modify there are these ones:

  $my_module = AAA; // replace AAA with the module id of the ad module for YOU
  $authors_to_modules = array( XXX=>BBB, YYY=>CCC, ZZZ=>DDD);

Replace XXX, YYY, ZZZ with the user ids of the different K2 authors, and BBB, CCC, DDD with the module ids holding their advertising codes.
You can find the user ids in the user manager in the backend of Joomla.

Best regards,
Stephen

Great :-)
Have a very happy New Year