"By setting a limited word count with a focused theme and a guaranteed audience beyond the class teacher, children have far greater motivation for writing. Those who are reluctant writers feel safe with only 100 words to write, whilst those more advanced writers can really extend themselves with the word restriction."
Did a search on Twitter and these examples came up from our professor. They are prior student examples. I thought I would include them, but they don't have to be counted as one of my ten. I love the music example.
Preface: I am not counting this as a resource for my assignment, but I do think this page is awesome in that it offers so many established PLNs to join by category. If you are looking to grow or expand your PLN, this would be a great place to look.