So I talked with bigwill and we kinda came to conclusion there's an issue with cookies.
The offer.php script can't pull "tracking202pci" because if I look at http headers it's obvious nothing is going on there.
Here's except from http headers as I click on offer:
http://lander.com/offer.php
GET /offer.php HTTP/1.1
Host: lander.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 (.NET CLR 3.5.30729)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer:
http://www.lander.com/
HTTP/1.1 302 Found
Date: Sun, 03 Oct 2010 17:37:31 GMT
Server: Apache/2.2.13 (Unix) mod_ssl/2.2.13 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4 PHP/5.2.9
X-Powered-By: PHP/5.2.9
Location:
http://www.prosperdomain.com/tracking202/redirect/off.php?acip=413&pci=
Content-Length: 0
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html
----------------------------------------------------------
http://www.prosperdomain.com/tracking202/redirect/off.php?acip=413&pci=
GET /tracking202/redirect/off.php?acip=413&pci= HTTP/1.1
Host:
www.prosperdomain.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 (.NET CLR 3.5.30729)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer:
http://www.lander.com/
Cookie: tracking202subid=33; tracking202subid_a_0=1; tracking202subid_a_=33; tracking202subid_a_1=33
HTTP/1.1 302 Found
Date: Sun, 03 Oct 2010 17:37:31 GMT
Server: Apache/2.2.13 (Unix) mod_ssl/2.2.13 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4 PHP/5.2.9
X-Powered-By: PHP/5.2.9
Location:
http://network.com/rd/r.php?sid=YYYYYY&pub=XXXXXX&c1=
Content-Length: 0
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html
----------------------------------------------------------
http://network.com/rd/r.php?sid=YYYYYY&pub=XXXXX&c1=
Any ideas?