At the weekend I heard about a couple of interesting websites:
SprachDuo: Helps, for instance, an English-speaker learning German in Munich to find a German-speaker who wants to learn English, to practice conversation. They do other languages too. This would have been very useful when I arrived in Munich.
Kulturkueche: Reviews and interviews from a group of independent/aspiring writers in Berlin and Munich who pooled their work to promote their talents.