According to Google Ad Planner, Facebook had 13 million unique visitors in Germany in the month of December. Competitive social media network VZ-Netzwerke (which includes SchuelerVZ, MeinVZ and StudiVZ) fell to 12 million, making Facebook the top German social networking destination for the month.
Twitter’s traffic grew, too, with 8.3% more visitors in January than in December.
More details (in German) at Pader Solutions. (via @michaelreuter)