@Thraxas,
I agree with your standpoint up to a point, but I also believe that no company has any right to tell me what I can do with something I bought from them (Sony, PS3), or where to spend my money (Visa, Mastercard, Paypal refusing payments to Wikileaks).
Personally, I'd simply withdraw my support for these companies (something I have already done with Sony), but I can see why people would take it a step further to get their point across ... not that I support such action myself.
@Quik,
Quote: "HOWEVER, being anonymous on the internet and doing terrorist acts, is NOT okay"
If I want to protest something that my government is doing, I can organise/join a protest, which may also include things like sit-ins.
DOS attacks are effectively sit-ins on the Internet.
Equating them to terrorist actions devalues the use of the word.
@David R,
So free speech, unless you find someone saying something that you find offensive?
Personally, I find them to be a bunch of brainless, thoughtless, offensive prats with too much time on their hands. That said, I still support their right to NOT be silenced even though I find no value (or maybe even negative value) in anything they say.