These were the results:
1. People responded to first messages 44% more often.
2. “conversations went deeper”
3. Contact details were exchanged more quickly.
When the photos were restored at 4PM, 2,200 people were in the middle of conversations that had started “blind”. Those conversations melted away.
That said, the people who actually used the “Blind Date App” if anything seemed slightly happier with their dates. The full report from OKCupid is here. Yet here is the combined chart drawn from when people score “looks” and “personality” separately.
By the way, I would never try to match you up with a book I fear you may not like, at least not without telling you or otherwise signaling that incompatibility in advance.