Its basically where they look through your computer, ipods, etc without your permission, and confiscate if if they spot anything illegal/copyright infringing.
This means they can monitor whatever
we do, and also censor the internet.
Atleast read that part ^http://www.stopacta.info/ <- interesting stuff there
"ACTA is an international trade agreement currently negociated by the European Union, the United States, Japan, Canada, South Korea, Australia as well as a few other countries, whose aim is to enforce copyright and tackle counterfeited goods (hence its acronym: Anti-Counterfeiting Trade Agreement).
The main problem with this treaty is that all the negociations are done secretely. Leaked documents show that one of the major goal of the treaty is to force signatory countries into implementing anti file-sharing policies under the form of three-strikes schemes and net filtering practices.
"