Depends where you work. Personally, I will think it is odd, then move on. But your HR department may have a different view. If it is a personal slack, then hav

Depends where you work. Personally, I will think it is odd, then move on. But your HR department may have a different view. If it is a personal slack, then have fun! I'm a big fan of the rainbow thumbs up because I like rainbows.