If you want to generate a sustained internet based income with affiliate marketing, you'll have to automate both the front end and the back end processes.
Here are a few proven tips to ensure that you'll be easily generating affiliate commissions while visions of sugar plums dance in your head...
1. Research and select the best affiliate products and associated affiliate programs which best fit your targetted market and that will allow you to generate the most amount of money for the least amount of effort in the shortest amount of time.
You want to make sure that the "affiliate vendor" (if they manage their own program) or the affiliate network (who manages a variety of affiliate vendor products) has a reputation for paying affiliates on time with an easy method for affiliates to register (get their affiliate ID/link), keep track of their progress (clicks, sales, etc), and get paid (ie: direct deposit into a paypal account versus receiving a check).
Select products or services that pay high commissions and that have a high quality sales page that gets high conversion rates (turns lookers into buyers).
Always review the sales page to determine if it entices youto buy the product. If not, it probably won't entice others either. Don't forget that downloadable products or services pay a much higher commission percentage than a physical product due to the fact that they cost less for the vendor to create, advertise, stock, and deliver to the buyer. If you do select a physical product, try mixing it with a related downloadable product to boost your overall payouts. An example would be marketing a gardening tool with a related "how to grow the biggest, juiciest apples" digital ebook.
Also keep in mind that an affiliate product or service with a monthly recurring fee (ie: a gardening club membership site)
generates an ongoing steam of income for work you did once. For the most income possibilities, you should have a combination of "one time charge" and "monthly recurring fee" products that relate to your targetted market.
You should also plan to market additional products to those that have bought from you, be sure that the affiliate network you selected has a variety of "complimentary" products you can introduce. Since people usually buy more than one product on a topic they are excited about, this will ensure an ongoing stream of income from your initial marketing workd. Although you can transparently sell products to your customers from a variety of affiliate networks at the same time, it will be less stressful on you and your ability to stay on top of your affiliate activities if you have as few affiliate product owners and/or affiliate networks to manage as possible.

2. Focus on ONE product or service at a time so you can

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