Appetition, Location Meets Opinion. Appetition is an empowering way to create, support, and promote location-based petitions. Become the founder of an Appetition, then seek support from friends and online social networks. Instead of just announcing to friends and social networks that you're at a certain location, use Appetition to become a catalyst for change or voice your support for something positive. With Appetition you're checking in and you're speaking out.