The implementation of affiliate marketing on the internet relies heavily on various techniques built into the design of many web-pages and websites, and the use of calls to external domains to track user actions (click tracking, Ad Sense) and to serve up content (advertising) to the user. Most of this activity adds time[citation needed] and is generally a nuisance to the casual web-surfer and is seen as visual clutter.[citation needed] Various countermeasures have evolved over time to prevent or eliminate the appearance of advertising when a web-page is rendered. Third party programs (Ad-Aware, Adblock Plus, Spybot, pop-up blockers, etc.) and particularly, the use of a comprehensive HOSTS file can effectively eliminate the visual clutter and the extra time and bandwidth needed to render many web pages. The use of specific entries in the HOSTS file to block these well-known and persistent marketing and click-tracking domains can also aid in reducing a system's exposure to malware by preventing the content of infected advertising or tracking servers to reach a user's web-browser.[citation needed]
In time I would like to branch out into multiple niches, but am unsure whether I can do this using one company name. If I am effectively emailing various lists (who have bought different niche products and are categorised into separate email lists), would it be best to use different email addresses and company names for each niche? I am unsure what to do, as I do not wish to appear to deceive anyone, but do not want to be protrayed as an expert in every area.
I’d stick with Amazon if I were you. All of my Amazon sites only have Amazon affiliate links. If you use Google Adsense display ads on your site, you’re literally taking people away from your site for the sake of just a few cents with these type of ads. If you direct them just to Amazon, then you have a greater chance of earning more money from that click.

This is Simon, thank you for your post, it is very helpful for me. However, we are a lighting company, and we are plan to try the Affiliate Website to increase our sale. But it seem that there are many different Affiliate website to be chose and some of them also need pay some fee to begin, so as we just begin to do this, which website is your recommend ?
Products are now put in a category. The commission will be based on the category each product has been placed in whether or not the category is correct. For instance, I had a sale for a child riding toy tractor. Instead of it being in toys category which would have only earned me 3%, it was actually placed in lawn and garden category which I then actually earned 8% instead.
AWIN is probably best for experienced affiliates who can hit the ground running without a lot of guidance or feedback from the network. There is a $5 fee charged to apply to become an affiliate, but if you’re approved, the $5 will be added to your account. If your application is denied, however, you will lose the $5 fee. AWIN operates globally, but it is most heavily concentrated on British and EU merchants.
Affiliate marketing is commonly confused with referral marketing, as both forms of marketing use third parties to drive sales to the retailer. The two forms of marketing are differentiated, however, in how they drive sales, where affiliate marketing relies purely on financial motivations, while referral marketing relies more on trust and personal relationships.[citation needed]