Have you used http://hashgr.am/ it is incredible!!! Simply put in any word hit enter and all photos with that tag word on instagram pop up. I do mean any word at all, cat, girl, klout,
Hashgram is the best way to discover and share what's happening on Instagram.
Formed in 2011 at designed a simple web-based "no app required" search and share utility for Instagram. Since then, Hashgram has grown into a real-time discovery platform used everyday by people all over the world.
Tags are descriptive metadata assigned and associated with each image posted to Instagram. Adding a few content specific hashtags to your caption allows users to search and share images on Hashgram based on their interests.
You don't have to snap a photo, or post a comment to enjoy Hashgram. You don't even need an app. All you need to do is search and share based on your interests.
TOP TAGS ON INSTAGRAM