Keeping in view that the German speaking webmasters community is the second largest community, Google has introduced Google Webmasters blog in German language.

Official Google Webmasters Central blog states:
For those German-speaking folks among our readers of this English Webmaster Central Blog we have exciting news: We have just launched the German Webmaster-Zentrale Blog! This is a tribute to the fact that the German-speaking webmaster community is our second biggest audience of this blog. The German Webmaster Blog will provide you with first-hand information tailored towards our German-speaking webmasters. The blog will contain a mix of German versions of postings from this blog as well as unique postings about market-specific issues.

Check out the German Webmaster-Zentrale Blog!