How does SEO work, is it a free service?

DO I have to pay my web designer for it

Your web designer has nothing to do with SEO, also don’t pay any Seo Company for this kind of stuff, they will ask you for a lot of money and deliver nothing.

You better give this to a SEO specialist. You can find plenty on http://www.seoclerks.com/ they are pretty cheap and usually deliver quality work. This way you can track everything the freelancer is doing and be sure of what you get for you money.

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