For future reference, it's better do say something like, "Hi, HN. I'm the author and am glad to answer questions. You can also follow me on twitter at @kvargs for future details."

We definitely like participation, but it took me a while to realize that you are the author, and that kvargs is your Twitter account.

Wow. I didn't realize it was a whole publicity campaign by kvargs. Puts a different light on it.