Also, odds are that someone wouldn't bother logging out and in between two accounts. I'd weight your search against people who commented in between the time that the throwaway account posted.
People who commented shortly before the throwaway account are also good candidates, as are people who seem to comment around the same time on other days.
Well I fully agree with this comment i.e. I recognize the "quirks" too. It looks to me like the results of a U.K. education. As a Brit-born male, in my past I have had some non-Brit ladies comment about the robot...
> no misspellings. odd. proper use of punctuation. strange. I'd say the writer fails the Turing test
That's depressing.
Meanwhile, "[space]-[space]" rather than "--" for "—" is idiosyncratic, and since HN preserves original spaces in comments, ".[space]" rather than ".[space][space]" rules a few more of us out.
Except for "fully agree" and the hyphen bit, that would generally characterize my writing, if only because bad grammar & spelling bug me. But it sure ain't me :-)