You reach a saturation point where people resent having to share you more with people who they think are not as connected and so they end up with a feeling of resentment.
I think forums are great. It's a weird thing to overhear a conversation about yourself. But, the bottom line is that these people are really interested; they get the image and they get very opinionated and it turns into squabbles. You know that's human nature, that's life.