Social Network:

Xing here
Spaceweather here
Borderland of Science here
Space Facts here
Noteflights here
BTS here
German Patent Office here

OVGU Magdeburg:

Webmail Uni Magdeburg here
Student Association Mathematics here
HISQIS here

Master Programm:

TU Braunschweig here
Uni Bremen here
UMB here

Science Computing:

Linux (Windows) here

Jobs:

Queer here