Cost per click was more common in the early days of affiliate marketing but has diminished in use over time due to click fraud issues very similar to the click fraud issues modern search engines are facing today. Contextual advertising programs are not considered in the statistic pertaining to the diminished use of cost per click, as it is uncertain if contextual advertising can be considered affiliate marketing.
Website:  Websites are a great way to establish your brand identity. They can use text, images, audio, and video elements to convey the company's message, as well as inform existing and potential customers of the features and benefits of the company's products or services. The website may or may not include the ability to capture leads from potential customers or directly sell a product or service online. 
In April 2008 the State of New York inserted an item in the state budget asserting sales tax jurisdiction over Amazon.com sales to residents of New York, based on the existence of affiliate links from New York–based websites to Amazon.[45] The state asserts that even one such affiliate constitutes Amazon having a business presence in the state, and is sufficient to allow New York to tax all Amazon sales to state residents. Amazon challenged the amendment and lost at the trial level in January 2009. The case is currently making its way through the New York appeals courts.
Focus on reviewing products and services that fall within your niche. Then, leveraging the rapport you have created with your audience and your stance as an expert, tell your readers why they would benefit from purchasing the product or service you are promoting. Almost anything sold online can be reviewed if there is an affiliate program – you can review physical products, digital software, or even services booked online, like ride sharing or travel resort booking. It is especially effective to compare this product to others in the same category. Most importantly, make sure you are generating detailed, articulate content to improve conversions.
JVZoo’s strength is that it allows experienced marketers to gain access to product launches and a huge range of online courses while setting up sales funnels and customized landing pages. It’s definitely not for someone who wants to monetize a blog or earn money by having users click through and buy physical products. If you’ve carved out a strong presence online in the marketing space, JVZoo might be a perfect fit.
Shopify is a very popular site building platform for people interested in building eCommerce stores. It has been around for the past few years and seen significant growth in its user base over this time. You can earn a staggering 200% per sale for every new customer you refer to them, which means that there is up to $2400 per new customer on offer.
Shopify has three different account types as well as standalone third-party products like themes and apps. Commissions are paid for sales of any of these products, including users who sign up for a 14-day free trial and then convert to a paid account. Shopify also has a wide range of blog posts, webinars, and video tutorials that can be linked to with the standard commission paid on any sales that are generated.
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.
Let’s say you have a promotions page where you’re promoting a product via affiliate links. If you currently get 5,000 visits/month at a 2% conversion rate, you have 100 referrals. To get to 200 referrals, you can either focus on getting 5,000 more visitors, or simply increasing the conversion rate to 4%. Which sounds easier? Instead of spending months building domain authority with blogging and guest posts to get more organic traffic, you just have to increase the conversion rate by 2%. This can include landing page optimization, testing your calls-to-action, and having a conversion rate optimization strategy in place. By testing and optimizing your site, you’ll get far better results with much less effort. 

I would personally agree with linkshare.com as a great affiliate marketing platform to join as a publisher. Here’s why. Back in 2005 when I knew nothing about affiliate marketing and was using blogger.com as a free blogging platform without any experience whatsoever and joining Walmart.com as my first official affiliate program, I was able to insert Walmart affiliate in its in my blogger blog and earn a $72 commission. I was onto affiliate marketing for life from there.
Given that I am still in reading and preparation phase, I am mainly interested to overlap my niche with real life interests so I could have motivation to produce content on regular basis. Two that I am highly interested are PC parts and Fitness. I am aware they are too general subjects with lot of sites doing the same, but my idea is to produce constant review on PC parts, Laptops, Mobile devices, Accessories all in different categories, create lists like top5 or 10 under XX budget etc. Similar approach I would use if I I decide to go with Fitness path and divide content training advice, review of fat loss methods, supplementation, nutrition etc. I am aware that this will be a long journey and that it can pass few months before sales start to kick in and that’s the risk I am ready to take. My questions are: 
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