KEI or Keyword Effectiveness Index

What is KEI and how is it useful?

KEI or Keyword Effectiveness Index is a system of ranking how popular a keyword is and the amount of competition it has on the Internet. With a high KEI your keywords will be more popular and will have less competition and thus will have a good chance to get a good ranking. A lower KEI indicates that the keywords are not as popular and have a lot of competition. Hence a high KEI means that the keywords on your website are more profitable.