That is probably true, though at least one of the people in question now attends meetups in my area. In fact I even got a job through LW. On the other hand I don't feel like I use this site socially. I don't have conversations with other users, or remember which users have been friendly or hostile to me. I never even met any of my employers. I just get an urge to nitpick, or shout into the void, or point out facts, or read interesting articles, and so I come here.