if im not mistaken the word noob started from o2jam haha..stands for newbie (noo-b)
for me..seriously dota did help me get a lot of frens..no need worry no kaki 2 dota wif d but dota makes me damn emo "

the worst thing is i know it's making me emo everyday and i cant quit! T_T so i can say dota is addictive to and it's burning holes in ppl's pocket too by the ammount of money we spend in cc 2 dota haha..