Earlier quoted context omitted.
Is there any theoretical way to defeat these programs and ensure anonymity? I'm even suspect of SSL given private keys can probably be demanded through FISA court.
The 100% theoretically guaranteed method is the zerocoin extension: http://zerocoin.org/
One ZeroCoin transaction takes the bandwidth/storage space of something like 100 (or was it 1000?) Bitcoin transactions. That could add up fast.