Key words are important because they are what help people find your website or blog in seach engines sutch as google.
Seache engines send out seach spiders, that read your html code and pick up on words it you text, links and titles.
They follow links to and from other website to see how relivent other linking sites are to yours.
Google likes your website to have lots of out going and incoming links, that are relivent to your sunject.
Relivant link can help you rank better in google.
Key words are important so you should use them with in website for the subject your site is about.
If you want seache engines to know that your web page is about the following tags are important
what is meta data?
Metadata is loosely defined as data about data. Metadata is a concept that applies mainly to electronically archived or presented data and is used to describe the
a) definition, b) structure and c) administration of data files with all contents in context to ease the use of the captured and archived data for further use.
For example, a web page may include metadata specifying what language it's written in, what tools were used to create it,
where to go for more on the subject and so on.
This kind of metadata helps describe an item and allows it to be found again by browsing or searching.
Tags are generally chosen informally and personally by the item's creator or by its viewer, depending on the system.
You should mention you keywords in the description and keywords section at least once
ExampleYou are trying to optimize your page for the keyword phrase "golf caddy".
Your html page meta data should look something like the code above.
Use keywords in file names sutch as, golf-caddy.html
Seach engines use these to help determine pange rank
Use the keywords in your content, the spiders will read it and rank you accordingly
Use the keywords in your title contents
Google have a great tool for choosing your key words, the link below will take you to it.
Google Keywords tool


