[DominikR]

> Facebook's problems are their own.

Of course.

> Why should HN community bother with their problems?

No one has to, I just like to learn something by solving problems, even when those problems are not mine.

> - What's wrong with secret questions?

Probably nothing, I just know that I have always entered garbage into secret question fields, because I knew that I'd never be able to remember the correct answer to the secret question once I needed it.

[VLM]

"No one has to, I just like to learn something by solving problems, even when those problems are not mine."

I liked your answer, but its not a "facebook problem" its a problem for anyone on the internet who has users log into accounts. Probably a large fraction of HN is directly or tangentially involved with that problem.