A word or phrase in the content of your web pages that matches the words and phrases users are entering into search engines as closely as possible. The idea is to speak the same language as users when they make their search queries so you rank higher in their organic search results based on relevance.

3 Quick And Easy Ways To Build A Profitable Opt-In List
You finally realize that you need a good opt-in list. After reading countless articles and sought expert advices and have read many success stories of people creating a small fortune with opt-in lists you finally decide to have one of your own.