If you could search your friends’ thoughts, interests, and activities, would that be a better search experience? In many cases, it would be. Searching for restaurants, books, or movies, would turn up recommendations from people you actually know. …

October was a good month for Twitter. All those election Tweets brought a 25 percent increase in U.S. visitors from the month before, to 1.45 million unique visitors, according to comScore. (Worldwide, the number was 5.6 million in September). Since…