Going by the $2.60 clicks id guess he just joined adsense and one of the first things he did was create content around the highest paying ads, not much content and probably spammed the links in a few forums. Thats ok generally but for a new publisher it doesnt look so good.
WoW what are you like 12??? the no reason ban, funny how there is never a reason for the bad things people do and get banned for. I know you must have deserved the ban, google doesn't ban for NO REASON, there is always a reason. If you go back look at your site's, think back to what you did, ask your friends to click?, you clicked? you must have done something wrong.
Noone would get banned for no reason, for sure!!! Google does NOT ban you just because you make a mistake a few times. I mistakenly clicked on my own ads twice, and contacted Google each time, and you know what they told me the second time? "Oh you don't need to contact us each time: While we don't agree with clicking one's own ads for any reason, we do understand that it happens at times. So you really don't need to let us know each time this happens." So yeah, they never ban you for no reason!!!
Hahahah... Leandar... Great suggestion! But I'd like to agree to one of the contibutor to ur thread; let us see your site and then make suggestion (or reason to be exact ) on why you got banned. If you need an official reason, then contact Google!