Abstract. As the type of content available on the web is becoming increasingly diverse, a particular challenge is to properly determine the types of documents sought by a user, that is the domain intent (e.g. image, video) and/or the genre intent (e.g. blog, wikipedia). In this paper, we analysed the Microsoft 2006 RFP click dataset to obtain an understanding of domain and genre intents and their dynamics i.e. how intents evolve within search sessions and their effect on query reformulation.