I want to have a go at running a blog and will probably have adsense on it. Do visitors from certain countries pay more when using adsense? or is it all similar. E.g. should I target US, Canadian, UK traffic? etc.
yes, it is..but CPC also differs depending on source of traffic..if the traffic is organic, it has a higher cpc
Really depends on the product you are actually blogging about or your site is about. if your product is Jute/agricultural you will find that Asian traffic pays you much more than the american ones and if your product is like say cell phones you will see that UK and Norweigan traffic pays you the most.