ShoutOmatic: Audible Shout-Outs: Stop Typing, Start Shouting!
Timehop: What did you do 1 year ago today?
LikeJournal - Social Bookmarking for the Facebook Like Button
Welcome to Likester - The Global Popularity Engine
See who likes what you doKeep up with your friendsBrowse what people like anywhere
dlvr.it : deliver your content to the social web.
ifttt
ifttt puts the internet to work for you by creating tasks that fit this simple structure.