Instead of capitalizing on your friends poor taste in music and news, lets learn about you and how you behave, read, listen, all to bring you the best experience possible. Both Spotify and Pocket are good examples of companies who have done this right.
Do you have a 40h work week in your employee contract, but still read e-mails in the evenings and on vacation? We should either measure all activities we do or let everyone have unlimited vacation and no fixed work hours. I vote for the latter.