You can interact with missions when using the basic view of the missions available list by rating them or saving "favorites" for later. We encourage you to do so. We will be gathering this data so that in the future we can better target missions that are potentially of interest to you.
When rating a mission, 1 star means not interested and 5 stars means very interested.
If you 'heart' a mission, you are flagging the mission as a favorite, and you can come back to it later. There is a filter at the top of the page to show only favorites.