Amazon Advertising (formerly AMS or Amazon Marketing Services) is a service that works in a similar way to pay-per-click ads on Google.
Apache is a free and open-source cross-platform web server software.
Bluehost is a large web host known for its WordPress expertise, variety of “one-stop-shop” services, and bargain prices.
eBay Partner Network is an online referral program where eBay pays commissions to referrers on sales generated by customers they’ve referred.
Endurance Page Cache adds basic file-based caching to WordPress.