It's not easy to understand, especially from the blog post alone, but as far as I understand it, the proposition is the following: Big companies have the ability to do research on users all the time, either by doing anonymous studies or by tracking you for their ad networks.
This is a luxury many researchers that work outside of these big tech companies don't have, which creates a scientific power imbalance. Mozilla Rally is meant to give these capabilities to everyone, and the platform is meant to ensure that you always know what you sign up for and what data is being used.
If I understand the Princeton example correctly: They want to figure out how people consume and spread misinformation. Social networks like Facebook have all that data but won't share it. Now you can opt-in to a Rally study where independent researchers can examine the data.
This is a luxury many researchers that work outside of these big tech companies don't have, which creates a scientific power imbalance. Mozilla Rally is meant to give these capabilities to everyone, and the platform is meant to ensure that you always know what you sign up for and what data is being used.
If I understand the Princeton example correctly: They want to figure out how people consume and spread misinformation. Social networks like Facebook have all that data but won't share it. Now you can opt-in to a Rally study where independent researchers can examine the data.