The reason you should use Pinterest is that it works much faster than SEO. Although you shouldn’t neglect SEO, it takes time for your blog posts to rank well on search engines.
When someone types these into Google and comes across your site, they’re in a buying mood. They’re in the product research and potentially purchasing stage. This means they’re much more likely to read your post, click your affiliate link, and buy what you recommended.

When you disclose an affiliate relationship—and you should, because as we already noted, building trust is a must—consumers will appreciate your honesty and won’t mind contributing to your bottom line by using your link (the opposite can be true; if they feel you’re not being honest about your affiliations, they may go directly to the vendor just to avoid giving you the referral credit!).
Providing value to the buyer is really the key. You don’t want a one-off sales strategy where you pick a product blindly and then pray to God (or spend money on A/B testing after the fact) it works. Take some time and research valuable products which will benefit your users.