First Questions can be DANGEROUS
Good thing I had not had any qualifications for being there. I would have asked, "hey, behoodied one... Have you ever heard of Visual Analytics?
I would have pointed out that the first time *I* saw it was around 1999, and that what fb are offering is NOT stellarly new.
Second, I would have pointed out that if users really have exportable data, they could dump it out and go for the next Open Source social or mining app that acts like Visual Analytics.
Third, I would have pointed out that any slick SQL database with a user-friendly GUI and abiity to process billions of records could do that. Hell, for that matter, Lotus Approach, as a front end, could to most of it:
1. Find only my friends, or find all "not = my friends"
2. Create a "stored find" of just my friends, or of those
3. Using stored find, further constrain found set to find all records containing value "x" or "x, y, z"
As long as the records contain content correct for the columns' name, not much data sanitization need be done.
And, any government agency needing such features (in case fb expect to wow world governments) can roll their own tools while awaiting the results of a valid warrant for any and all persons related to or having contacted person or persons "x", "y", or "z", or all persons having a temporal or proximity association in this geographic area during these time points.
What fb is talking about is NOT going to boost their shares values. Maybe he is trying to build a hood-wearing cult? If so, he should get into the sweater-making business, one that embeds Wi-Fi and fb into the cloth...