Thanks a lot, but it is not only me. I have to pass this on to the many people that helped getting where we are now!
The answer to this question is surprisingly complex.This is mainly due to us still not being precise in the use of our wording.
Esp. “privact” as a term currently covers a lot of things. So let’s look what benefit citizens (I translate this as layman, the average user) get from using / collaborating with privact, from the perspective of the different things privact currently covers:
- us, the community, the people thinking and discussing here &
- the basic idea of the social hack we are doing:
Citizens should not join these parts of privact, unless they have a personal motivation for doing so. We are talking publicly, but we are actually specialists working on a special topic. - the technology we will create and apps running upon this technology:
Citizens should use our technology, because it will be the easiest way for them to stay private and to experience even better services than today possible. Also they can help to reduce CO2 on short term and win even more power longer-term. - the organizations we will create (e.V and foundation):
Citizens need to trust us to do the right things right:
for the e.V this means that citizens are willing to support us financially and for the foundation, it means they trust us doing the thing in their interest.
Easy access to the biggest and highest quality pool of personal data ever existed. And advantages at the point of sale / point of usage decision (Because they can use the privact seal to easily inform the potential users about their way to work with private data) . And probably also their reputation 
Yes. There are mainly two classes of users: Services that are doing something (hopefully) good for you individually based on access to your data and surveys, so research wanting to learn something about a group of people. Behind each of them usually is an organizations, which has to provide the transparency to participate in our system.
I guess just a not needed fill word here. The whole section does not belong here. Changed.