Have you ever been to a website that prompted you for your name to make an account or have temporary access, and you put in a fake name? Perhaps some forum that wanted you to register?
One of the charges against Aaron was Wire Fraud, because he did just that - entering the name "Gary Host" into a captive portal to register for wifi access.
I support them, as long as they do the right thing afterwards and make the owners aware and do not do anything destructive or that violates someone's privacy.
Since I do not follow the EULA/license agreement for each website, and I send a handshake requesting files over a webserver, I am in violation of federal law for unauthorized computer usage.