Ah. Like what we do with the songs, only with images instead?

[He can see how one could evolve to become the other, given the technology to support it.]

We've got some networks, but they're mostly localized and limited access. Something as widespread as what I think you're talking about... I don't think we have any technology that would be cheap enough to implement something like that. The best common technology we have for long distance communication is still voice and text only.

But anyway, as for memes, think I could talk you into showing me an example?