Instagram tests letting you follow hashtags instead of people!
Instagram tests the ability to allow you to follow hashtags instead of humans, as spotted by @Social_pip.
So far the feature has only shown up briefly for one of TNW’s team members, so it appears to be a limited test for now. Instagram declined sharing more information when we reached out for comment, but experimental features often end up rolling out widely. This one seems like a particularly useful one, so I imagine it’s only a matter of time.