Unnecessary spaces make captions worse. It is the sort of thing some people do to try and draw attention to their caption by making it stand out more. Commenting on your own caption when it isn't in response to someone else's comment is another tactic. People are wise to such tactics so they probably cost more votes than they gain.
Space between these two lines would improve this caption, which is already a winner.
10:14am
Unnecessary spaces make captions worse. It is the sort of thing some people do to try and draw attention to their caption by making it stand out more. Commenting on your own caption when it isn't in response to someone else's comment is another tactic. People are wise to such tactics so they probably cost more votes than they gain.
12:17pm