Tunisian blogger Sami Ben Gharbia has created this fascinating Google Maps mashup of the prisons where political dissidents have been locked up by the Tunisian government. When you click on a marker, legal details about the prisoners' cases pop up, along with video from the dissidents and their families.

Tunisia has a long history of human rights abuses and harsh conditions in its network of secret prisons, so publishing this much politically sensitive and hard-to-obtain information  has earned Gharbia plaudits from human rights advocates... along with the inability to return home from his exile in The Hague. The Tunisian government maintains one of the strictest online censorship regimes in the world, so it's hard to know to what extent Gharbia's map is reaching Tunisians inside the country.

Hat tip: Boing Boing