There are three types of ‘meta tags’ that are commonly used for search engine optimisation. They are the Title tag, the Keywords tag and the Description tag.The first thing you can do is completely forget about the keywords tag.
The keywords tag was used in the early tags of websites (back in the 90’s and early 2000’s) and was used specifically to list all the keywords you want your website to rank for. Since then the major search engines (Google and Bing) have come up with far more sophisticated and complex ways of determining which words on your pages are ‘keywords’. The aim of Google and Bing is to deliver the most relevant content related to the search term that people are searching on. This is the number one reason why Google rose above other early competitors such as Yahoo and Altavista.. it was because they were able to deliver more relevant results which led to most people using Google as their main (or only) search engine.