All accounts default to a paper check payment method until you elect to change to direct deposit or wire. If you're located in an eligible country, you can start receiving payment via direct deposit. Once you become eligible for direct deposit, you can specify this as your payment method in Settings->Payment Information. If you are not within a country supported by direct deposit you may be eligible to receive wire payments or can continue to receive payments with a check.
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I guess the only thing I’d say about this is if you are blogging in a competitive niche and working in what I’d call the “gray area” of link masking and not using “nofollow” as described here by google (https://support.google.com/webmasters/answer/96569?hl=en) expect that competitors that are writing real reviews with real photos (not stuff grabbed from a manufacturers website) are going to report you to google as webspam. The thing I hate most is affiliate sites that have never held a product in their hand and then try to pass off something as a first person review for the sole sake of pushing you to Amazon.com.
Affiliate marketing overlaps with other Internet marketing methods to some degree, because affiliates often use regular advertising methods. Those methods include organic search engine optimization (SEO), paid search engine marketing (PPC – Pay Per Click), e-mail marketing, content marketing, and (in some sense) display advertising. On the other hand, affiliates sometimes use less orthodox techniques, such as publishing reviews of products or services offered by a partner.