1.INTRODUCTION

2.DEFINITIONS AND EXPLANATIONS

2.1.Definition of Stationary Instant Messaging (IM)
2.2.Technical Functionality of IM
2.3.Definition of Wireless Instant Messaging (WIM)
2.4.Technical Functionality of WIM
2.5.Categorization of Devices
2.6.The Role of Stationary IM in Comparison to Wireless IM

3.WIM FROM THE USER’S POINT OF VIEW

3.1.Status of Existing Research
3.2.Theories of Media Usage
  3.2.1.The Uses & Gratification (U&G) Approach
  3.2.2.The U&G Approach in Connection with this Study
  3.2.3.Developing the U&G Approach for WIM-Usage
  3.2.3.1.IM Compared to other Media
  3.2.3.2.Gratifications for WIM-Usage
3.3.Method and Implementation
  3.3.1.Reasoning about Method
  3.3.2.Structure of Online Poll
  3.3.3.Recruitment of Participants
3.4.Results of Online Poll
  3.4.1.Procedure of Evaluation
  3.4.2.Description of Sample
  3.4.3.Testing of the Hypotheses
  3.4.3.1.Social-Communicative Dimension
  3.4.3.2.Economic Dimension
  3.4.3.3.Entertainment Dimension
  3.4.3.4.WIM-related Dimension
  3.4.4.All Weighted Dimensions at a Glance
3.5.Critical Reflection of Analysis

4.PROBLEMS FROM THE USER’S POINT OF VIEW

4.1.Privacy
4.2.Resources/ Usability
4.3.Standardization

5.WIM FROM THE OPERATOR’S POINT OF VIEW

5.1.The Market of IM
  5.1.1.The Stationary IM Operators
  5.1.1.1.ICQ
  5.1.1.2.AIM (AOL Instant Messenger)
  5.1.1.3.MSN (Microsoft Messenger)
  5.1.1.4.Yahoo
  5.1.1.5.“Messenger War” (AOL and Microsoft)
  5.1.1.6.Cross-Messaging Clients
  5.1.2.Committees and Organizations
  5.1.2.1.IETF (The Internet Engineering Task Force)
  5.1.2.2.IMUnified
5.2.The Market of WIM
  5.2.1.WIM-Operators in Germany
  5.2.2.The IM Providers as WIM Providers
  5.2.3.The Mobile Operators as WIM Providers
  5.2.4.The Device and Application Developers as WIM Providers
  5.2.4.1.Committees and Organizations
  5.2.4.2.Open Mobile Alliance (OMA)
  5.2.4.3.PAM Forum
  5.2.4.4.Wireless Village
  5.2.5.Possibilities for WIM-Operators
  5.2.5.1.Marketing
  5.2.5.2.New Applications and Services
  5.2.5.3.Source of Revenue and Sale Increase

6.CONCLUSION