The Deployment of a Mobile Question Answering System ==================================================== Jochen L. Leidner Linguit GmbH (www.linguit.com) Two approaches exist to search automatically for information on the web from the desktop: keyword-based search engines, and language-aware question answering systems. In a mobile environment, specific challenges must be faced, including, but not limited to, space constraints regarding input/output devices. It is argued that an approach combining the two search paradigms can meet these challenges. Using an SMS (Small Message Services) based case study, we describe how these factors are addressed in the Nuggets answer retrieval system for text-enabled mobile phones, contrast the types of questions people ask to a desktop search scenario and conclude with pointing out evaluation challenges.