1. How does your LinkedIn profile rank? LinkedIn taps into inherent narcissism by exposing your percentile in profile views compared with that of your connections, or with others in your company. Disappointed in your results? LinkedIn suggests that you beef up your summary, add more skills, and join more groups.
2. There’s a big opportunity for native mobile apps to take advantage of your handheld’s hardware from camera or accelerometer. This week, Facebook announced an imminent mobile app feature that uses the microphone to identify ambient TV shows, music, or movies. The app then offers up the content to be approved for inclusion in a status update.
3. In a surely wholly unrelated initiative, Facebook changed the default privacy setting for new users to be “friends and family” versus “public” and announced a new privacy check up tool to be rolled out in the coming weeks. Here’s hoping your new privacy settings will keep your mobile device microphone from reporting you are home in your pajamas watching Veep, rather than at the Childish Gambino concert featured in your status message.
4. The internet of things means, sadly but inevitably, ads running on all those connected things. Like on your thermostat. Or your refrigerator. See the full list as well as a couple of clarifications from Google.
5. Why did that video go viral? Success can be attributed to eliciting strong, positive emotion. Be sure to keep it upbeat — people want to see the daring rescue attempt, but no one wants to know that the kitten actually died.

Weekend fun: Speaking of viral video, here’s a slick maneuver from a clever young man who caught a foul ball — and perhaps tried to win a heart.

Every Friday, find five, highly subjective pointers to compelling technologies, emerging trends, and interesting ideas that affect how we live and work digitally.