For me I would choose a program with Recurring commission. You can build a real passive income. Its the best way to go! One suggestion is contact companies who sell services and ask if you can sell their service for them. Sometimes popular affiliate programs like these have just way too many people trying to sell their service. I personally went to sitecare.ca and asked them if I could sell their service and I couldn’t be happier! So find a service you believe in and go for it!
Affiliate agreements can be entered into by any type of business, from sole proprietor to corporation. Affiliating with another company is a good way to promote your business and make more money by joining with someone who has a proven track record and a larger customer base. But before you join an affiliate program of any kind, consider these questions (from Leslie Truex, Home Business expert).

Affiliates can be found all around the business world. In the corporate securities and capital markets, executive officers, directors, large stockholders, subsidiaries, parent entities, and sister companies are affiliates of other companies. Two entities may be affiliates if one owns less than a majority of voting stock in the other. For instance, Bank of America has a number of different affiliates around the world including US Trust and Merrill Lynch.

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.
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.

Recent corporate changes and folding 2Checkout into a larger company that is involved in payment processing and e-commerce means that the affiliate program can sometimes feel somewhat neglected. But the ability to generate custom coupon codes and the comprehensive knowledge base make 2Checkout a good option for experienced affiliates with an established user base. But if you’re just entering the affiliate field for the first time, 2Checkout might not be where you want to start.
While any “regular” job requires you to be at work to make money, affiliate marketing offers you the ability to make money while you sleep. By investing an initial amount of time into a campaign, you will see continuous returns on that time as consumers purchase the product over the following days and weeks. You receive money for your work long after you’ve finished it. Even when you’re not in front of your computer, your marketing skills will be earning you a steady flow of income.
Cost per action/sale methods require that referred visitors do more than visit the advertiser's website before the affiliate receives a commission. The advertiser must convert that visitor first. It is in the best interest of the affiliate to send the most closely targeted traffic to the advertiser as possible to increase the chance of a conversion. The risk and loss are shared between the affiliate and the advertiser.
A multinational company may set up affiliates to break into international markets while protecting the parent company's name in case the affiliate fails or the parent company is not viewed favorably due to its foreign origin. Understanding the differences between affiliates and other company arrangements is important in covering debts and other legal obligations.

A relative newcomer that was only founded in 2014, ConvertKit has taken the world of email marketing by storm. According to the company, they now have nearly 20,000 active customers of their email services. Their affiliate program works by paying existing customers a lifetime 30 percent commission for referrals that subsequently become ConvertKit customers or who sign up for ConvertKit webinars and other digital products.

When promoting affiliate offers, just make sure you are fully aware of all the terms and conditions attached to your affiliate program. Some programs can be strict about how they allow you to promote their products. For example, some may limit you to banner ads and links only, while others will allow you to use paid advertising, but won't allow email marketing. 
Developing and monetizing microsites can also garner a serious amount of sales. These sites are advertised within a partner site or on the sponsored listings of a search engine. They are distinct and separate from the organization’s main site. By offering more focused, relevant content to a specific audience, microsites lead to increased conversions due to their simple and straightforward call to action.
Let no one tell you that email marketing is dead. An email list is crucial for every affiliate marketer. You can start building up your email list with a lead magnet (like the information products mentioned previously) or even just by encouraging your audience to sign up for your updates. You can then push your content to this audience via email and also direct them to your affiliate offers. Don't be sleazy about the sales, but if you build up enough trust with your email audience; when the time comes, they will not mind purchasing a product from you. 
Hi, Nice article. I am not sure about the process though. I can understand, finding a niche. But, when it comes to affiliate programs I get a little lost. Would I be promoting someone else's products? If so, no problem. I know I need to research high end products with gravity, are these products ones in certain stores, or companies, etc.?? If so, do I need to get permissions to be on an affiliate program with that company? Also, if it is products with a company, then how do I offer promotions on their products since they are not mine? Thank you, Nanette Vlahusich
In some smaller markets in the United States, a station may even be simultaneously listed as an affiliate of two (or in rare cases, three) networks. A station which has a dual affiliation is typically expected to air all or most of both networks' core prime time schedules – although programming from a station's secondary affiliation normally airs outside its usual network time slot, and some less popular programs may simply be left off of a station's schedule. Dual affiliations are most commonly associated with the smaller American television networks, such as The CW and MyNetworkTV, which air fewer hours of prime time programming than the "Big Four" networks and can therefore be more easily combined into a single schedule, although historically the "Big Four" have had some dual-affiliate stations in small markets as well and in some cases, affiliates of more than two networks (including a few that had affiliations with ABC, NBC, CBS and DuMont during the late 1940s through the mid-1950s, when fewer television stations existed in a particular market, especially those that would eventually be able to support four commercial outlets).
A relative newcomer that was only founded in 2014, ConvertKit has taken the world of email marketing by storm. According to the company, they now have nearly 20,000 active customers of their email services. Their affiliate program works by paying existing customers a lifetime 30 percent commission for referrals that subsequently become ConvertKit customers or who sign up for ConvertKit webinars and other digital products.
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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