We often forgot to hit the favorite button on our favorite caches. I thought I was going to have to go back and rewrite the logs for all of the caches we wanted to give favorites to, and then I clicked the arrow beside the favorites tab on a cache, and saw I could just choose "add favorite" from the drop down menu.
YAY! Quick and easy!
A larger view, for those who need it. Just click on the arrow beside the Favorites at the top.