What’s a #sneakycommutershot or #powerlineporn?   They are both Instagram hash-tags. 

The former describes taking pictures of other bus, train or tube passengers without them knowing.  Meanwhile #powerlineporn has nothing to do with porn and everything to do with power line photography.  

These are just some of the themes Rabbit Dirk explores in an article on Instagram sub-culture for The Wall.   Read it here.