The characteristics of mobile ad hoc networks (MANETs) require special care in the handling of service advertisement and discovery (Ad/D). In this paper, we propose a noble service Ad/D technique for MANETs. Our scheme avoids redundant flooding and reduces the system overhead by integrating Ad/D with routing layer. It also tracks changing conditions, such as traffic and service popularity levels. Based on a variable zone radius, we have combined push-based Ad/D with a pull-based Ad/D strategy