We are meeting once a month to share knowledge of and experience with Haskell.
Each time, one of us presents a topic, be it a library, a programming technique, development tools, or internals of GHC or other implementations. The format varies depending on the topic and the presenter between hands-on workshops, discussions and lectures.
Prior knowledge certainly helps, but we definitely don't require you to be an expert to join and/or to present a topic. The only thing that is important is that you are interested in Haskell and that you are eager to learn more.
HaskellerZ is organized by the Zurich Friends of Haskell (http://zfoh.ch/).
Note that we've recently had to turn on moderator approval for new members. This is solely to deal with a relentless wave of spam that has hit Meetup; and everyone is still welcome to join.