WIMS 2.0 (Web 2.0 and IMS) is an initiative promoted by Telefónica seeking convergence between Web 2.0 and the telecom new generation services based on IMS (IP Multimedia Subsystem), to create innovative, appealing and user-centric services and applications. These services will combine features from both Web and Telecom worlds. On the one hand, relevant features like interactivity, ubiquity, social-orientation, user participation and content generation will be adopted from Web 2.0 Services, On the other hand, IMS will enhance WIMS 2.0 services features with a collection of capabilities like multimedia telephony, media sharing, push-to-talk, presence and context, online address book, etc., being all of them applicable to mobile, fixed or convergent telecom networks. In addition, in order to provide more versatile and enriched services and a short-term implementation, WIMS 2.0 also considers the utilization of pre-IMS telco capabilities like SMS/MMS messaging, circuit-switched video and voice calls, networked address books, etc.