We present an attempt to engage social media networks, bringing the crowdsourcing model into mobile environments. We introduce LogicCrowd, a declarative programming paradigm for mobile crowdsourcing applications, developed as an extension of Prolog. LogicCrowd aims at filling the gap between traditional machine computation, which operates upon its database, and social media, which is capable of interacting with real people. In this paper, we illustrate the potential of our approach via programming idioms, a prototype implementation and scenarios.