TG Referrers is completely customizable with detailed statistical analysis, an approval system, secure administration control panel and best of all – its FREE! From my experience when using this script with WordPress if you
add the log PHP code to the header you will see some errors. I just add it to the footer is it seemed to work fine. But the creator of this script says, “some software such as WordPress can cause errors with this include. If that is the case, please try using the full root path for the include.”
I have two clients that currently use this and they are both happy with this script. So if you are looking for a good referrers script you should give TG Referrers a try.