Pretty sure most people who are messageboard junkies are.
"Information addiction is a condition whereby the diagnosed is addicted to the hit of pleasure and stimulation from information. It has been referred to as "pseudo-attention deficit disorder" because it tends to cause somewhat ADD-like symptoms.
This addiction usually begins with continuously using an Information streaming service, like TeleVision, YouTube, FaceBook, Twitter, etc, which gets the brain unaccustomed to idleness, always watching/reading/listening something. Then it spreads onto other Information retrieval activities."
Why is Twitter so addicting? 140 characters is even more addictive ? the dopamine system is most powerfully stimulated when the information coming in is small so that it doesn?t full satisfy. A short text or twitter (can only be 140 characters!) is ideally suited to send our dopamine system raging.
Dopamine Makes You Addicted To Seeking Information