If Timehop can't display all of your past tweets because of Twitter's API limitations, you can add your Twitter archive through the service's Web site. Here's how!
Install the Timehop iOS app to receive daily reminders of what you were doing on this date last year.
Wake up each morning to an e-mail telling you what you were doing exactly one year ago today by using Timehop.
Amazon shows off drones that could deliver packages to doorsteps, but it's doubtful the project will take off anytime soon. Also, Facebook tinkers with feed flashbacks and #GivingTuesday gets a push from Google+ Hangouts.
The social network experiments with a News Feed option for viewing today in history, as captured by your friends.
Reflective service that organized user content from social networks into a timeline announces it is joining another company and will delete accounts tomorrow.