OSF has now suspended the entire repository, not just deleted the user datafile. Not sure why this is the case.

The paper (PDF) is available here.

Edited to add: The repository is closed due to a DMCA request sent by OKCupid which is currently being investigated.

Edited to add2: For those wondering what information was in the dataset, the metadata file is here. I believe this file is not the center of the copyright claim and it has no user information at all, so should be completely legal no matter what the outcome of other complaints are.