At one time, he was a valued member of this community. He contributed greatly to the wiki, and to overall knowledge and Keyboard Science. He tried to help n00bs, without making them feel like idiots for asking questions. He considered himself to be the #1 Keyboard Expert on the Planet.
Then something happened, and I'm not sure quite what it was. He had arguments with some members, and got himself banned for a short time. When he came back, he quickly evolved into nothing but a troll. Got himself permanently banned from GH. Then the R00tW0RM incident took down GH, and we all found temporary refuge on Deskthority, until iMav, mkawa, and the other admins could get the site rebuilt. Big thanks to webwit for allowing us to camp there, now that I mention it. While there, ripster got himself banned from DT, as well. Now he has resigned himself to Reddit, and still holds a grudge, as you say.