Typically a throwaway email is used. Question is, is it worth filtering through the spam to pan for genuine emails?

Put your Twitter user id and make sure your DM are open.

If your email is old enough that you used it on Usenet, the spam from HN profile will surely be in homeopathic proportions!

Just imagine the amount of salesy BS and recruiter spam that must come from HN.

Very little in my experience.