Some good tips. I fully agree that it’s all about trust and it is always good to recommend an affiliate product that you have actually used. Why risk your reputation on a product you don’t know if it’s any good or not? If people buy one dodgy product from your site, they will probably never make that mistake again. That it why my blog strongly advocates ethical affiliate marketing. It’s the best long term stragey for affiliate marketing success.
Promote products that are stepping stones to products you will create in the future. This is a bit more advanced, but is a great way to think ahead. Amy Porterfield suggests thinking about the first thing your followers will need in order to get started with what you provide. For example, I teach people how to blog, so the first thing they need to start a blog is hosting. That’s why I am an affiliate for hosting.
Always disclose your affiliate relationship. Most visitors will probably understand that graphic ads will lead to your getting paid, but if you write a review or use an in-text link as a recommendation, you want your readers to know that may lead to compensation as well. This ensures you retain transparency and trust with your readers, but also, it's required by the FTC's endorsement rules.