Every referralID gives the same iframes and ID in the uatosearch link so Isuppose it is added on the portal by the owner of the search engine and not by the members.

mvent2's tool also detected this :
freindppc.com/portal/?ref=beike in a 0iframe


CODE
No zeroiframes detected!
Check took 5.52 seconds

(Level: 0) Url checked:
http://www.gonok.com/portal/?ref=index
Zeroiframes detected on this site: 0
No ad codes identified

(Level: 1) Url checked: (iframe source)
http://www.gonok.com/portal/search.php?ref=index
Zeroiframes detected on this site: 0
No ad codes identified

(Level: 2) Url checked: (meta refresh)
content=0;http://www.gonok.com/search/?username=index&keywords=consolidate+debt
Blank page / could not connect

(Level: 1) Url checked: (iframe source)
http://www.gonok.com/xml/?ref=index
Zeroiframes detected on this site: 0
No ad codes identified

(Level: 1) Url checked: (iframe source)
http://www.gonok.com/search/find.php?username=index&keywords=cheap+auto+insurance
Zeroiframes detected on this site: 0
No ad codes identified