Although no official studies have been done (as far as this writer knows), just like anything else, World of Warcraft must be taken in moderation. If you do anything day in and day out it becomes addictive.
There are no official cheats for World of Warcaft.
Yes there is a World of warcaft website www.worldofwarcaft.com
Yes they expire after the time is used.
Anything can become psychologically addictive.
Any activity that is repeatedly done can become addictive.
Taken in large doses it can become slightly addictive.
Tobacco can become addictive at any age. So dont try it
No. It does not require a disk to play. You might need a disc to install it though, if you don't want to download it.
lip balm can become addictive especially if it is the flavored ones!
No, they're not physically addictive. They may become habit forming or mentally addictive though.
Yes, nicotine patches such as NicoDerm can become addictive. The patches contain small amounts of nicotine to help combat some symptoms of smoking cessation. However, since nicotine is addictive, the patches themselves can be addictive.
Marijuana is not addictive.