Until about a year ago, HN was our single best hiring vector. Some of the smartest people at Matasano got to us through posts on hiring threads. So, I'll go with "yes" on the headline.

On the other hand, I am always a little irritated when people scrape the hiring threads and reframe them. When we've posted job ads on HN, we've done it deliberately and with the expectation that those ads will be seen in the proper context. You should get permission before you scrape content off HN and reframe it.