My vote: Submission four

-THEME?
Yes, It is a bright sunny day, which to me means happiness, and clearly everone in the picture are happy and enjoying themselves.

- WHY do you like it?
Its a good design, and it makes me feel happy about it. Seeing such friendship, Also the little kid in the back always made me laugh.
- WHAT really gets your attention?
The older link, With his little sister on his back. ^_^

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every time you masturbate god kills a kitten... OMG I've committed genocide.