[andreyf]

In addition, while Reddit facilitates anonymous discussion, Hacker News has a substantial transparency in its population. My real name and address, for example, are trivial to find out using the information in my HN profile -- and that's kind of the point. You'll find that this practice is far more common on HN than on Reddit.

I hadn't noticed this, but it's very true. As a side-effect of the "would you say this in person?" question, I treat HN users as I would people I would have no hesitation of meeting in person. On reddit, although someone could put in the effort to find/meet me in person, I assume no one will.