The last decade was characterized by a boom in the quantity and quality of the web sites - something that has been summarized with the buzzword \"Web 2.0\". This immense growth was possible through the massive participation of users, who were able to easily create, share, and interact with content of any kind. But when looking at software, there are only few possibilities for users to participate and get involved. In software lifecycles, requirements engineering is the activity concerned with the involvement of users and stakeholders. However, requirements engineering typically involves a selective group of people and is not open to the public.