The polaroid camera is not something that I would have used for inspiration in trying to develop a new mobile photo-sharing platform. But that’s exactly what Kevin Systrom and Mike Krieger, the makers of Instagram, did. Polaroid cameras were big and bulky, and the overall design and feel was anything but sleek. I personally loved the eight exposures per pack. But, what was cool about polaroid cameras, and what Instagram has capitalized on, is the instant gratification…