Talk:Applicative functor

There has been some talk of using Applicative Functors for streams/data flow programming [1,2]. Perhaps someone can explain that at an introductory level?

While we are at it, perhaps someone can expand on the "Another Essence of Dataflow Programming" paper [2].

[1] http://haskell.org/haskellwiki/Phooey [2] http://citeseer.ist.psu.edu/denckla06another.html