Sad to see, but sounds necessary. The cost of maintaining all current features of OSF would be $4-5 million/yr -- far more than I ever realized. This should serve as a reminder to us all that open science is not a service an external group provides, it's a responsibility that lies with all of us.
Over the next several months, we will phase out some popular OSF features. These changes do not affect current public content, which remains safe and accessible. We have prepared support material to help users adapt. I am very sorry for the disruption to your work. Please read this post for details.