How to attract people to my internet store without banners and SEO and so on? Maybe gorilla marketing?

Hi,

I have internet store but I am thinking how to attract people to my store (office goods), I will have a banner, gift program an so on, but I stat thinking what else I can do to attract people in such internet portals like facebook, blogs, forums? Maybe you have some experience to do that? I was reading some articles about gorilla marketing in the internet (not tradional ways to reach a customers) maybe you know some ideas about that!

Thanks!!!
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Seo Marketing|Link Building