You can track the clicks per keyword for PPC campaigns by setting up unique forwarding links for each keyword.

This can be done simply by using unique campaign codes with your ViralURL.com cloaked, shortened & tracked links or by setting up unique forwarding links in the Add2it Go-To System.

Let's say your ViralURL.com URL is: http://vur.me/presents/DomainCostClub 

And the keyword you like to track are e.g.: domain registration & cheap domains

Then the links to use including the campaign codes are:  http://vur.me/presents-t-domainregistration/DomainCostClub & http://vur.me/presents-t-cheapdomains/DomainCostClub 

This will allow you to setup just one link in ViralURL.com (http://vur.me/presents/DomainCostClub), but track as many keywords as like.  The campaign codes can be up to 64 characters long.

Now, this allows you to see how many clicks each keyword got, but you need to have control over the sales thank you page to be able to track the sales!  So, if you are just an affiliate you will most likely not be able to track sales.