Bruce Dudley was a great help in tech forum as well. In fact, he was a moderator there for some time. What happened to him? A bit flipped in his brain and he scammed at least 6 people (that I personally know of) here for over 45 grand. Now the police are looking for him and he is going to sit in jail for a long time.
One thing for sure, you can't tell if someone is a "good" or "bad" person just from OSO. Answering posts in the tech forum is NOT a good barometer.
Bruce is a fine example.