Even today more than 40% of information that tourists retrieve is provided through internet and also more than 30% of all bookings are done this way. Tourism-related businesses need fast, wide-reaching announcement facilities to advertise their products. A web site is too "passive" for this purpose, so that we will use a push system to support active advertisement with booking functionalities et al. etPlanner is a mobile system for planning customized tourism experience. Using mobile devices (e.g. PDA, mobile phones) consumers get their visit planned in an intelligent way and will be supported throughout their whole journey. Tourists may react on special offers as well as on relating events such as departing delays or weather conditions.