People who have Internet addiction tend to have mixed feelings of both joy and guilt while on the computer. They generally lose track of time and neglect responsibilities. They uncontrollably use the computer to relieve stress, cheer up or for sexual gratification. They feel anxious or irritable when away from the computer and are more likely to alienate themselves from family and friends, generally preferring to make their social connections with strangers online.
Read more : http://www.ehow.com/about_5247242_effects-internet-addiction.html