ClickBank allows you to join for free, and the approval process is virtually automatic, so it’s a great choice for people entering the affiliated game for the first time. ClickBank has a ton of information, including FAQs, walk-throughs, and videos available, so the barrier to entry is quite low. There’s also a (paid) program called ClickBank University with courses and assistance from experienced marketers.
One big difference between SkimLinks and VigLinks, however, is that once you’re approved by the company, you can choose to work with any merchant or program on its platform. SkimLinks has also published a white paper discussing its partnership with Buzzfeed, giving SkimLinks a lot of credibility. SkimLinks also has a higher tier of vetted merchants called “Preferred Partner” and “VIP” that both pay higher commissions than standard merchants.