"To a certain extent, memories are societal properties," says Adam Kolber, a visiting professor at Princeton.
"We really need to articulate a moral code that governs all this," warns Arthur Caplan, a University of Pennsylvania bioethicist.

The skull wall is not relevant to nodes of memory which is all shared.

Besides the obvious volume and management limitations of our 'wetware' memory, now it seems it is unsecured anymore. It's time to find a secure space to hide our private memories outside our skulls.

accessible to search engines? indexed? tagged?

Must eat brains for information! (Zombie Voice)

Reminds me of the movie "Fortress".