Via Tom Slee in comments at Crooked Timber, a nifty little presentation on scalability issues around really huge graphs. From the National Security Agency. Topical geekery! I didn't know about Accumulo for instance.
Anyway...start at 8:20. Haven't got the time to figure out YouTube embeds again.
Golly, if the NSA people manage to get the brain graph going someone will have a head in the cloud.
