[litoorachure]

>We aren't going to see a cultural shift in timescales shorter than a decade.

Why not? We already did. 2000 was still in the era of "never give out accurate personal information online." 2005 was fully in the MySpace/Facebook social media era.

[yifanl]

Facebook captured not just internet powerusers, but an entirely new (and eventually, a substantially larger) audience. I would very much doubt there's a larger audience currently offline out there today.