Just watched some videos (after work ;)) of Burda`s Digital Lifestyle Day 05, which seems to be have been pretty posh an event (and quite a party).
Among quite a number of more or less important people from more or less important companies (folks from blogger.com, flickr, Google, Yahoo, Microsoft.. kind of everybody) Loïc Le Meur and Stefan Heidenreich had short presentations there, you find all the videos online.
I haven`t heard any of the speakers mentioning RDF so far, but some of them (Herr Heidenreich for example, explicitly emphasizing formats) should have (says the geek in me).

Well, although this sounds very much like an occasion for Marc to show up, Mr.Digital-Lifestyle himself is missing.