With now having the ability to select two seconds in a given day, we needed a way to pick the favorite one. Which is why we'd added "FAVES". To pick your fave of the day, simply tap the star on the bottom left corner of the second you want to represent that calendar day. Don't worry, we automatically pick the first second in case you don't have two seconds that day.
So why select a favorite?
We know not everyone is going to want to mash together all their seconds. So we added the option of a picking "ONLY FAVES" or "ALL SNIPPETS" in the mash window. When you have only faves selected, we'll mash a video of the seconds you've favorited (starred).
FYI: You can always go back and change your favorite second of a day.