Department of Homeland Security registration or observation?

Effective from 12 January, 2009, the US Department of Homeland Security will require all visitors to a US airport, a cruise ship in US waters, or a coach entering the USA. To receive a formal travel authorisation at least 72 hours prior to their departure via the DHS website. Otherwise you will not be able to board a flight, coach or ship into the USA

esta.cbp.dhs.gov...


So you go on this site and you get a pop up that rants about them owning this system, you cant break in blah blah blah ...
It also goes along the lines to say:

1.You cannot have the expectation of privacy when you use their system.
2.They can conduct monitoring activities of you without notice.

You cant enter the site (or the US unles you get you register) unless you agree.

Does this mean people entering the states are now providing IP adresses and once you agree to go on to their website they are saying you can be monitored and you have no privacy?

Am I understand this correctly?
Your thoughts?

Here is the pop up text you get.

You are about to access a Department of Homeland Security computer system. This computer system and data therein are property of the U.S. Government and provided for official U.S. Government information and use. There is no expectation of privacy when you use this computer system. The use of a password or any other security measure does not establish an expectation of privacy. By using this system, you consent to the terms set forth in this notice. You may not process classified national security information on this computer system. Access to this system is restricted to authorized users only. Unauthorized access, use, or modification of this system or of data contained herein, or in transit to/from this system, may constitute a violation of section 1030 of title 18 of the U.S. Code and other criminal laws. Anyone who accesses a Federal computer system without authorization or exceeds access authority, or obtains, alters, damages, destroys, or discloses information, or prevents authorized use of information on the computer system, may be subject to penalties, fines or imprisonment. This computer system and any related equipment is subject to monitoring for administrative oversight, law enforcement, criminal investigative purposes, inquiries into alleged wrongdoing or misuse, and to ensure proper performance of applicable security features and procedures. DHS may conduct monitoring activities without further notice.

IP's are usually always logged on all websites. So yes to your first question.

As for the second, I would have to trust that if they say they will then they will.

As Russell Tice the NSA whistleblower yesterday named the media on MSNBC as one of the groups surveuyed. by them. So tourists and business people entering the US are also being monitored. Methinks it goes beyond US citizens?