According to this article anyway (http://techcrunch.com/2011/08/03/instagram-150-million/). That's a lot. And while most of the over 5 million users are individuals, I don't see a reason why brands can't get in on this too. In fact, I've already seen a few brands jumping on the Instagram bandwagon and it's paying off. Why? Well, it's just another way customers see your brand in a more personal light. It's another touch point. So how can brands leverage Instagram to help strengthen their brand experience? A few ways:

1) Use the iPhone app to take photos of your customers, products and retail space. Maybe it's for a special, promo or just an every day occasion.
2) Use your account to follow like-minded users that you can comment on and like their photos.
3) Use the cool filter options to edit your pics before using them on other social sites like Facebook and Twitter or even in campaigns
4) Take pics of things you're not selling, like your dog or things around your city. Why not!

Cheers,
David