Do you have to be married? Is it for anyone whose partner has had a child or only for your own child?

Like, could you, in theory, have a baby making rotation of 3 "girlfriends" with 4 months of paternal leave each per year for an eternal vacation?

I'm not sure of the specifics but I believe you only get one set of leave a year. I wouldn't recommend having multiple girlfriends and babies (and, to be honest, if you did this going back to work would seem like a much better option).

Looking after an under-one year old baby is not a vacation.

But also it's not hard work...

Have you ever looked after a baby?

wow that makes me want to apply at facebook

Which large tech companies don't have paid paternity leave? It's kind of a common thing... https://www.fatherly.com/50-best-places-to-work-for-new-dads...

Ahh, unfortunately most startups can't afford that kind of policy.

I think that's wrong. A few months leave is far more affordable and desirable over replacing a valuable employee or having a very unhappy and burned out employee forced to return to work. Not to mention the positive benefits that policies like this have on recruiting.

It's also just the right thing to do.

Facebook has had the most, and pressured others to copy.