German Internet entrepreneurs have a new friend — Hanse Ventures, a Hamburg-based Internet incubator that has been co-founded by Jochen MaaB, founder of Internet marketing firm, artaxo and Sarik Weber, formerly of XING and co-founder of Cellity. The founding share holders of the new investment group are publishing house Gruner+Jahr’s Chairman Dr. Bernd Kundrun and Rolf Schmidt-Holtz, CEO of Sony Music Entertainment.