Meta KW don't do much and they do NOTHING at all unless the same words are on your site in plain text and in your title and description. SE are looking for relevance so if the page is about gas stations and you have the word travel in your meta KW, but no where else it, won't do you any good at all.
On some of my pages I even remove meta KW and descriptions so all there is just a title tag and the actual page content. Some spiders seem to like it better as it does not look like an SEO optimized page, even if it is.
It's like paying reverse psychology with the engines.
