Understand what a random number is , how important the chaos is, and how to understand a sequence of numbers that seems to have no meaning.
Hot news: You can change the android partitions to Read-Write so you can upload new file versions (eg. permissions.xml) .
A tutorial on how to unlock your Android G1, how to upgrade the ROM version and how to get Root on your embedded linux box.
A short article on BlueJacking, which is sending unsolicited messages remotely to Bluetooth enabled devices.