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:
Don’t put all your eggs in one basket. If you only promote one merchant’s products, you are stuck with their commissions, their landing pages, and ultimately, their conversion rates. It is important to work with many different merchants in your niche and promote a wide range of products. This affiliate marketing strategy will diversify the amount of commissions you make and create a steady stream of revenue when building an affiliate website. 
In 2006, the most active sectors for affiliate marketing were the adult gambling, retail industries and file-sharing services.[21]:149–150 The three sectors expected to experience the greatest growth are the mobile phone, finance, and travel sectors.[21] Soon after these sectors came the entertainment (particularly gaming) and Internet-related services (particularly broadband) sectors. Also several of the affiliate solution providers expect to see increased interest from business-to-business marketers and advertisers in using affiliate marketing as part of their mix.[21]:149–150
You can make really good commissions from the eBay partner but it depends on the products which you decide to promote. Interestingly the commission levels vary according to where you are in the world not just on the products you decide to promote. One of the great reasons to sign up is that you can earn DOUBLE commissions in your first three months. They offer free to use link generators, ad creatives and widgets for you to promote different eBay items. eBay has over 162 Million active buyers which means there is a great potential to convert your traffic.
LinkConnector is something of a mixed bag, so it’s probably best for experienced affiliates who have become disillusioned with other networks and are looking to expand. LinkConnector’s bizarre mix of high-quality products and a low-quality dashboard make it hard to truly assess its viability, but their exclusive deals with some vendors can make it a true home run for publishers working in certain niches.
Another one of the highest paying and most popular dating affiliate programs is eHarmony, which is based on the actual earnings that can be made from each referred sale. Up to $188 can be made from a single sale. In general, the members at eHarmony are typically looking to find serious long term relationships, so many of them are willing to pay extra to find similar people.
Affiliate marketing is a very large industry and has become a key source of online income for many thousands of professional bloggers. With more and more online businesses becoming involved in affiliate marketing, more opportunities have arisen for bloggers, like you and I, to make money with their blog. and to ultimately create passive income streams.

JVZoo was founded in 2011 and has since rocketed to near the top as one of the most popular affiliate programs out there. JVZoo is unusual in that there are no upfront costs for either publishers or merchants (advertisers). JVZoo’s income is exclusively from charging fees (to both the merchant and the affiliate) after a sale has been made. It is also unusual in that it pays commissions “instantly” via PayPal rather than once a week/fortnight/month like other affiliate programs.
In 2006, the most active sectors for affiliate marketing were the adult gambling, retail industries and file-sharing services.[21]:149–150 The three sectors expected to experience the greatest growth are the mobile phone, finance, and travel sectors.[21] Soon after these sectors came the entertainment (particularly gaming) and Internet-related services (particularly broadband) sectors. Also several of the affiliate solution providers expect to see increased interest from business-to-business marketers and advertisers in using affiliate marketing as part of their mix.[21]:149–150
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