Internet and computer games as an addiction?

Do you agree with this statement that Internet and computer games are categorised as an addition? I would have agree for computer games as there are people who are really addicted to it especially for the online RPG gamers. But for Internet, American Medical Association has plan to classify it as an addiction.

On computer games, some scientists say video games is useful for learning as it promotes analytical thinking, team building, multitasking and problem solving.

Cybercafe operators argued that online games are actually doing youths more good than harm, in that the games even keep them away from getting involved in drugs or crime activities.