1. The document provides tips and tools for affiliate marketing and keyword research. It discusses different tools that can be used to research keywords, analyze competitors, and find related keywords.
2. Internationalization is important, as different markets may use different words to describe the same things. The example given was automotive bushes being called bushings in the US.
3. Testing keywords is important through tools like Google Adwords before optimizing websites for them through SEO. Tracking performance is also important.