People generally worry about social networking more than they need to. In kind of consumer internet investing and on social and professional networks, I kind of look at time spending and time efficiency. You know, time saving sites. So on time spending sites, things where you play lots of games or that sort of thing, you might worry about a productivity loss if people are spending a lot of time doing that. So if there's a lot of kind of addictive gaming going on during work hours, that won't be as helpful to you.
Reid Hoffman