How shuld we be using the keyword meta for seo?

[uggur]

Hello all,

Is any different about using keyword metatag for seo (not for bots!)?
For example our target keyword is : "buses are so big cars"
Which one is correct form?

example1 : <meta name="keywords" content="buses, are, so, big, cars">
example2 : <meta name="keywords" content="buses,are,so,big,cars"> // deleted space char.
example3 : <meta name="keywords" content="buses, are, so, big, cars, buses are so, big cars, buses are so big cars">

[tedster]

Google does not use the keyword meta tag, uggur. You can just save a little bandwidth if you want.