Hi zonfar,
Unfortunately I couldn't find any Wordpress plugins to do what you wanted as well, however, there is a solution to your problem if you are willing to mess with some code.
Here is a PHP script that redirects to your chosen URL(s) Randomly:
PHP:
<?php
if($_SERVER['HTTP_REFERER'] != "")
{
$aff_array = array("http://www.RANDOMWEBSITE1.COM",
"http://RANDOMWEBSITE2.COM",
"http://RANDOMWEBSITE3.COM");
header("Location: ".$aff_array[rand(0,2)]);
exit();
}
?>
If you have a page that you would like this redirect to happen on, you could edit the page and place this PHP script in there.
If you wanted to do something more specific, then there are ways to modify WP in order to do what you want to do.
I know you were probably looking for a simple, 'Install and Click' plugin, but if no better solution is found anytime soon you can try to implement the above code.
Best,
- Metra