Welcome to enthusiasts about Web 2.0, this is great that you are here.
BTW, we have one German presentation - Hajnalka Beck - and don't
miss her. Nika is excellent when it comes to technology, she is all into
Web 2.0, Second Life and all. She teaches web 2.0 at the University of
Göttingen and holds presentations at the LearnTec conference.
What I like about Nika very much is that she has a very very strong
background in pedagogics and always uses the tools under strict pedagogical
terms, never for the sake of just using tools.
You will enjoy her presentation. I saw it at the LearnTrends conference and was very impressed indeed. BTW, there aren't that many DaFler like her around, she is quite advanced and there aren't many like her.