Instagram is one of those really unique social networking apps that allows its user to create nice photos with minimal effort. As a photographer, I feel it really limits my creativity. Without all the bells and whistles, one has to stick every image in a little square, and use 1 of 20 filters to decorate it and change its colour scheme. I sometimes feel that it makes a mockery out of traditional photography, although anyone with a fancy Canon or Nikon who gets lucky can take a good image. Having said that, I do applaud instagram for not jumping on the advertising band wagon; it makes for a much less frustrating and cookie-free experience.
If I was to consider using it for my show/blog, I would take each image into more consideration and make sure the brand ethos showed through prominently.