You can check chronological comments from a certain user at, say, https://news.ycombinator.com/threads?id=blackdrag or https://news.ycombinator.com/threads?id=glaforge . I was just answering someone else's query when I mentioned that.

Most users on Hacker News use pseudonyms to better avoid the problems possible with having an online presence anywhere, though not all of us can be bothered. I suspect one regular commenter here, though, is associated with the Groovy/Grails developers at Pivotal.