> Consent of the data subject means any freely given, specific, informed and unambiguous indication of the data subject’s wishes by which he or she, by a statement or by a clear affirmative action, signifies agreement to the processing of personal data relating to him or her.
And 6-1:
> Processing shall be lawful only if and to the extent that at least one of the following applies:
> the data subject has given consent to the processing of his or her personal data for one or more specific purposes;
So whether consent is given or not depends on what people would write in their HN bio next to their email.
I'm not a lawyer, but I don't think Googling a person's email address and contacting them in regards to something they posted on HN qualifies as "processing of personal data".
