It is very possible to perform arbitrage on your blog with Adwords or any pay per click (PPC) system. Arbitrage simply means that you are buying traffic that will convert well on your blog, and selling products or earning revenue 
that will be worth more than the expense of the PPC traffic itself. For example, if you sold ebooks for $20 and you bought traffic at $0.02 per click, you would need to sell one every 10 clicks to break even. However, if you sold 2 ebooks, then you would be in profit. The trick is to get the best possible converting traffic that you can.
Do not assume that all you need is a keyword that will cover the whole niche, and nothing more. What you need are special keywords that take some people hours to find. These are buying keywords. The keywords you need are the ones that people are typing in, and are ready to buy. In some niches, this is easy to do, because the keyword modifiers used are such as “buy shower curtain” or “purchase lawnmower”. When it comes to products like ebooks or internet marketing coaching for example, you would struggle to find the buying keywords, unless you begin to think differently about your visitor.
Instead of trying to think of a buying keyword (where there may not necessarily be one) you should concentrate on the way you handle the visitor when they arrive. If they arrived from a keyword like “seo coaching” for example, there is no need whatsoever to explain to them why they need coaching – because they have already decided they need it. Simply give them what they are looking for – details of the coaching, and a price. You can apply this to any niche where the product or service itself does not have immediately recognisable buying keywords.
Written by Andrew Fitzgerald - Make Money Blogging
