Visual feedback that something is loading while using the app

[jshearer]

Changing mood tags, loading thumbnails, playing a video, rating a video, etc. all need some form of indication that something is happening, instead of the app just sitting there unresponsive. In the case of rating/tagging a video, it would be nice to have some sort of "Tada! Success" when the request goes through.

• Changing moods is slow #16 Changing moods is slow
• Thumbnails show spinners before they are done loading #23 Thumbnail spinners