Prop Reports has support for tracking which business partner or advertiser referred a user. This is done by associating an affiliate code with each partner and having the partner use that code when linking to your website.
For example, to track people signing up from Google Adwords, you should to set up the ad link as follows:
http://your.website.url/?prAffiliate=GOOGLE
For yahoo, you can set up the ad to link like so:
http://your.website.url/?prAffiliate=YAHOO
Your landing page (the page which you are linking to) needs to contain the following line:
<script type="text/javascript" src="http://you.propreports.com/affiliate_js.php"></script>
When the user signs up for an event or fills out a trading application, the corresponding affiliate code will be saved with their other information and you will be able to see it when viewing the client in Prop Reports.