There is a lot of space for creativity with the new artform just started to rise again.
Cant hide that iam a big fan of Cinemagraph prever all time the moving images instead of a static one. With some little tweak its even posible to play the Google+ hosted Gifs inside on a Facebook wall.
For Filmmaker it could be a great tool to promote there films and get wider spread than just with youtube where is still hard for smal filmmakers to get recognised.
But dont be afraid i will not over share Gifs once a week there will be a gif day.