Using web 2.0 on adwords

Ok i read about how to abuse google adwords coupons some may seem ridiculously paranoid :p i am not sure but it sounds paranoid to me .. anyway im new to this adwords and i was given a credit of $25 after spending $10 lol and i was curious as i see it a lot on my competition, why my competition always use web 2.0 not their direct website? is it because they use somekind of google adwords tricks like the coupon? will they ever caught? i want to learn how as this can save me a lot of money i…

Using web 2.0 on adwords