Young Muslim men in Germany are systematically trying to recruit their peers for jihad using sophisticated rhetoric and psychology and by targeting vulnerable youths who are searching for direction in life. Two men who have quit the scene tell their story to SPIEGEL, providing a rare look into a dangerous underground.
Link:http://www.spiegel.de/international/...-a-851393.html

There are those who argue the group involved are not Jihadists:
recruiting young men for the Hamburg branch of the Islamist organization Hizb ut-Tahrir. The group has been banned in Germany since 2003, but its members are still active underground.
Nevertheless an interesting read and one that is largely conducted in private and without any electronic communication.