I am not a Moderator here but I am pretty sure the software is similar to what we are using.
Here is a little sampling of info available to any server that has the right software now.
What you think is your IP is really only your DHCP Address.
If you go to check it that is the one you will see.
Even if you use Multi-proxies you can be found. People can't hide on the internet. They just think they can. With enough multi-proxies stacked or rotated it does take longer to track it down to the original ones though.
How do you think the Feds quickly find Internet Porn Criminls or Terrorits, and Hackers. They just think they are hidden.
Some of the ways to identify a poster that our software is capable of doing is to compare some of this information;
IP Addresses
IP Gateways
DNS Server IP's
Routing Tables
LAN Informations
Modem IP Addresses
Modem NetMasks
DHCP Addresses (lol) 192.168.1.64
MAC Addresses
Ethernet or Router Information (which is a different MAC Address)
Our softwear in the programs here can look at In Unicast Packets vs Out Unicast Packets vs Out Non Unicast Packets and In vs Out Octets
as a reference to comparing where postings originate.
Like I said earlier.
What you said can be true only if you all are sharing the same router or Ethernet Server and all of your internet is coming from only one server. Usually when this is done is within the same building or same company. I have seen it done though through different households if there is a large common Server that they all are sharing. This is not common and is seldom done becuase of the Network connetction isues to do it.
Ed