Lately, the Facebook “friend recommender” has been making “helpful” suggestions. I should “poke” Josh Silver, executive director of FreePress, an advocacy group in favor of net neutrality. I should “friend” Steve Case, founder of AOL. I should introduce friends to the largest real estate developer in Menlo Park, who clearly needs my help. I should write on my Mom’s wall, since we haven’t corresponded lately on Facebook. Facebook̵...