簡單的講，運用 social network 建立 proxy, 讓中國（＆其他國家）的苦難同胞可以突破網路封鎖～～因為知道特定proxy 的人只有被信任的/家庭成員，所以被抓出來擋掉的機會就會比較低...
psiphon is a human rights software project developed by the Citizen Lab at the Munk Centre for International Studies that allows citizens in uncensored countries to provide unfettered access to the Net through their home computers to friends and family members who live behind firewalls of states that censor.
