Google Music: When disliking a track, it automatically jumps to the next track.
Reddit - When going back to the list of items after viewing an item, the item gains dotted borders so you know which item was just clicked.
Find My iPhone - When your iOS device has been located, it shows the remaining battery level, so you know if you’re going to lose track of it soon.
Eyeem - Shows you in a dropdown what’s enabled for Facebook Timeline sharing
Asana - Ending a task with a colon converts it into a heading. Continue typing after the colon to keep it as a task.