You may find you can just restart X. press CTRL+ALT+BACKSPACE

This is a huge advantage of *nix from a sysadmins PoV; the fact that there is an enforced directory convention, with config data all in /etc, apps in /usr etc. windows has something similar in theory - but it's not enforced and few apps follow it.

Sometimes people do things when they're not "perfectly fine" with possible consequences because it's the right thing to do. Its called morality.

If someone is active in supporting freedom then they are a freedom activist - no scare quotes needed. Which concept are you implying is dubious: freedom or being an activist? OTOH people can be identified and punished for saying or doing things online that have no victims apart from political ideologies - so they are 'perpetrators' not perpetrators.

I don't quite get this, if you explicitly allow some dissident (called 'Spartacus', say) to use your network and identify as yourself, how isn't that you yourself saying 'I am Spartacus'?

Your test failed.

All the people saying "don't open your router because then the gov't will hold you responsible for things other people use it for" are missing the point. This is exactly why this is a freedom of speech issue and why the EFF is involved in the first place.
The gov't would like every act online to be traceable to an individual who can then be held responsible for it.
Freedom of speech means freedom from punishment because of your speech. The Soviets used to have a joke "everybody in Russia is free to say what they like - they're just not free to stay out of prison afterwards."
The only way to guarantee FoS is anonymity. The gov't can't punish you if they can't find you. Which is why dictatorships hate online anonymity.
Even if it was true that you could be held responsible for things others do using your router, you'd still have a duty to let them do it.
IANAL but AFAIK there is no legal basis in either the UK or US to punish someone for enabling someone else to commit a crime, unless it was part of a deliberate conspiracy, or 'common purpose'. So, (if its true at all that this is 'dangerous') the authorities are trying to illegally blackmail people into supporting their unconstitutional attempt to destroy anonymous Internet access.
Submitting to this blackmail is treason. Keep your country free, Keep your WiFi free.

I tested it with NoScript and it works

At the time of writing http://pipedot.org/ has 58 comments in the first 10 stories.
http://squte.com/ has 69
http://soylentnews.org/ has 247
slashdot has 1043

I always use ad-block on slashdot, but it's better to use a site that treats you as a contributor rather than an 'audience' in the first place.

Don't like Slashdot Beta? Try Pipedot.org, technocrat.net, or SoylentNews.org.

Technocrat is pretty much dead now. I like squte.com, which mirrors everything to Usenet, so it can't 'do a Beta' in future.

I don't think a 'scorched earth' policy would survive a national security letter, without the owners going to jail. A better solution is a Data Haven

Nowadays you don't need to type the http:// in the address bar, so it's just "slashdot dot org"

There are other alternatives to slashdot: http://squte.com/ http://pipedot.org/ and http://soylentnews.org/