affiliate marketing or pay per click advertising? which is better?

affiliate marketing or pay per click advertising? which is better? i want to use it on my website/blog please explain in detail ANSWER TO THE ABOVE QUESTION affiliate marketting pays more but the conversion rate is very low compared to ppc. It is also very difficult to track the affiliate conversions. ppc pays quickly but the revenues are low when compared to affiliate. adsense ppc is the best.