Computers love to repeat things. You should use it in your PowerPoint presentations. Control-C / control-V the same object over and over, making sure that things are aligned and spaced properly. The resulting chart is both busy and calm at the same time. Possible applications:
  • There are lots of these things arond 
  • It's crowded
  • We're different (2 out of the 234 sheep in this ad are different for example)
"Repeats" are sometimes used to compare values in infographics. I do not think that this is a good application of the technique. Use repeats to talk about one variable, use regular bar charts to compare things.