Affiliate Marketing

As you know you can use your blog to sell almost any kind of product by Affiliate Marketing.
You just need to write an article and if a customer buys the product from your link you get your commision.
Usually companies offer just a mere 3-5% but if the product is rather expensive I can live with it.
This happends for real life object. A much greater oportunity is with selling software. Here your commision can be something like 10% or maybe even 15%

What I found is rather impressive: a software company that offers 30% commision.
 
IGoUSB is an usb backup software that can help you backup anything in just seconds. The program protects your photos, music , videos or any kind of personal document. It is fast and simple to use.
The price for it is 69.99$ so for every sale you get a bit more than 20 $ .

Also they offer a free license so you can see/use the product for yourself.