Instagram is proving to be an incredible marketing tool for businesses, entrepreneurs and celebrities alike.  What started as an iPhone app, has since been launched as an Android app, and the popularity keeps growing. But what makes Instagram different to other photo sharing social networks or normal social networks like Twitter? I believe those using Instagram effectively are really opening themselves up to it, and they are willing to sharing personal and intimate moments that others won’t.   Customers and fans are sick of the gloss and shine that marketers add to celebrity personal brands and campaigns promoting popular companies products and services. If you are thinking to use Instagram…