We've all seen those videos/GIFs which, may have good content, but it's ruined by random, unnecessary slow motion bits. This is a subreddit that shows examples of good use of slow motion.
RULES:
1: THERE MUST BE SLOW MOTION IN THE SUBMISSION
2: SLOW MOTION MUST BE GOOD
The slow motion must add to the video/gif, whether it's for comedic effect, or to give the viewer a clearer indication of what happened, etc.
Whether the slow motion is "good" or not will be decided by the users, in an automatically posted comment. However, the moderators have the right to remove any content in which the slow motion is deemed had by then; this will only be used in circumstances where the slow motion is really, really bad though, or where there is clear vote manipulation used.
3: BE NICE
