Modular shelf pin system

At first glance this seems like a totally boring, almost pointless object. It looks like a shelf pin. You know, one of the things you stick into the hundreds of holes in your adjustable-shelf bookcase. But that is where the similarity ends. This isn't just a shelf pin. No, it's much more than that. This is the foundation of a system.

Why have 500 extra holes in your bookcase? Why not put them to use?

On it's own, this object doubles as a cable organizer for your bookcase; slide your cables