Hashtags and Geo Tagging can really push images and posts to the front of Instagram users' feeds. Originally used with Twitter, hashtags weren't really able to shine except in short with the restrictive 140 characters.
Instagram offers much more freedom from Twitter, in that the character count is less restrictive: 2200 characters with a maximum of 30 hashtags.
The caption length for Instagram helps uses post short essays, sometimes tagged with #photoessay (27,344 posts) or #instaessay (2,281 posts). While many users are using the tags to gain more viewers, at least one user had some success creating photo essays. (Sadly the profile, seems to inactive.)
Early on in the Quad-City Times experiments with Instagram, I didn't rely heavily on hashtags to generate traffic, but as I started to research more and more I began to incorporate area-centric hashtags such as #tagtheqc and #helloquadcities, including tagging city and state names in the caption.
Instantly we began to notice more and more users liking, commenting and following the Quad-City Times. Since Feb 2016, our Instagram followers has grown from 630 to over 1030 today, mostly with organic growth and hashtag use.
I began to wonder what happened if I retroactively began adding hashtags and geo tagging to older posts. I began with some of my own posts, and began tagging various photos with appropriate hashtags and location tags. In less than an hour I watched as the number of photo likes reached over 40, and at least six or seven people began following me.
Over the course of the next few days, I plan on diving back into the @qctimes posts and adding appropriate hashtags and geo tags as needed.