I’d stick with Amazon if I were you. All of my Amazon sites only have Amazon affiliate links. If you use Google Adsense display ads on your site, you’re literally taking people away from your site for the sake of just a few cents with these type of ads. If you direct them just to Amazon, then you have a greater chance of earning more money from that click.
If you have built up an email list, you could also promote your affiliate offers via email promotions. Just make sure you build up a relationship with your audience first instead of going for the hard sell straightaway. The emails you send out must contain your affiliate links to products so when your audience click through. the sale is attributed to you.
SkimLinks is primarily for established content producers (bloggers) who want to monetize their content. With a powerful WordPress plugin and scripts for just about any website type, setting up SkimLinks is very easy. And because you have access to all offers on their platform after you’re approved, SkimLinks is very well designed for affiliates who don’t want to spend a lot of time fiddling around with settings and other fine-tuning.