> Yes, and I helped her doing just that by pointing out which parts of her blog allow people to figure out who she is.

Maybe you think you are doing the right thing - but think about this from EJ's perspective: A stranger contacts her and points out all the ways she can be identified from her blog... he then passes her contact details on to an investor in Airbnb. He goes on hacker news and comments about how easy it was to identify her.

If I was in her position, feeling vulnerable and suspicious, I'd start to wonder whether your "helpful advice" was in fact a veiled suggestion that she should take down her blog post, or face the risk of being publicly identified and humiliated.