If you combine this number with information that 70% of the users are outside the United States and that 70 translations are available on the site, you'll get idea that Facebook is one (and only) tool that can cover almost whole world market.
Well known fact is that people are more sensitive to personal touch and mouth to mouth advertising so recommendation of a product from one guy you know and trust (your Facebook friend) is more valuable to you than 100 of anonymous recommendation from some site. So, knowing this, it becomes harder for marketers to promote their product without involving customers and whole community on Facebook.
Not so well known fact is that 40% of Facebook users use almost only Facebook. Yes, I mean from whole Internet, Facebook is location that they are spending 98% of their time. They even replaced their email accounts with Facebook messaging. So, this population is hard to target outside Facebook. No AdWords, no Bing no any other tool will help you to get their attention. And this is specially true for non English speaking users.
So, as a marketer and possible eCommerce promoter you have to go with a flow and use what is possible to get your customers. One option that is gaining popularity in last few months is Facebook Shop. Real eCommerce happening without leaving Facebook. Good example is shop (http://www.facebook.com/
Maybe you should give it a try too?
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