Wow didn't know this. Is this also why many e-commerce sites beg for your email every time you visit?
How does one counter the argument that "anecdotal evidence suggests people who sign up with us are 2x more likely to convert, so let's force more sign ups to increase revenue".
But it's easier for them to extrapolate data and say, hey, we couldn't get emails of xxx thousand users, so we lost xxx amount, vs our argument that they probably lost a number of users who were annoyed by the popup.
Except, you can count conversions, but you can't "measure annoyance"
Everyone panicked and good old email is trustworthy. FB holds the contacts in their paid garden that they once so hard fought for.