What affiliate products are best to promote?

One of the questions most asked by affiliates is - What product should I promote? If products are too common, i.e. ring tones and mobile phones, advertising rates will be very expensive. If the market is very competitive, i.e. ring tones and mobile phones, too many people will be trying to bid for keywords on AdWords, so the cost per click will be prohibitively expensive. If the product is too cheap, you will need to sell many products to get paid a decent income. If the product is too boring, you will loose interest. Niche products have few competitors, so are cheaper to advertise. Check out http://hovpod-affiliate-opportunity.blogspot.com/