This week, I have been writing key word rich content for landing pages. Do search engines care about key words? Well, that is up for debate, but search engines do care about content. What is in your key word meta tag, to me, is what indicates what the page is about.
When you are writing content, you need to have your keywords in mind. What is your page about? If you have a long laundry list of keywords, choose 2 or 3 and make a page just about those 2 or 3 (or less) things. That makes your page (your landing page) relevant for the 2 or 3 words that are used by people when they key them into search engines. If you are trying to write about 20 words on your page, you probably can’t really be relevant for all of them. A page about everything is a page about nothing.
Don’t try to be all things to all people, try to be what people want, when they want it.