Spam content

I received this today by email. How can i check where this spam is?

Profile:
Page: /modules/index.php
GET variables:

Array

(

    [r] => videos/share/keller-summon-the-mortals

)

Spam Content:

vexcnpomzifbwznfubm, <a href="http://www.jtduabyehi.com">svmuauwxdw</a> , [url=http://www.kbdtixnyqi.com]fueyahsgbl[/url], http://www.ueyswvdrzd.com svmuauwxdw

Since Profile field is empty, then not logged in member submitted this spam, most probably using "share" feature which is available for guests.

I only have view open for guest. Guest can not do anything in my site