I wasn't sure that this was worth acting on, but I see that another person seems to be taking it the wrong way, so I guess you are right. I've done the following:
Oh thank goodness you did something about this! I guess you didn't read every comment on your thread, or you just didn't take rwallace seriously at first, but rwallace actually decided to quit LessWrong because of your essay. You can tell for sure because that's the last thing they said here and they haven't posted anything since March: http://lesswrong.com/user/rwallace/
Maybe somebody should let them know... since they don't come to the site anymore, that would be hard, but if you know who the person's friends are, you could ask if they'll pass the mes...
In this essay I argue the following:
Full essay: http://www.gwern.net/Slowing%20Moore%27s%20Law