Padlet can be a useful tool for writing class: brainstorming, structuring the essay, peer feedback and so on. The advantages of padlet are obvious as other participants mentioned above. I haven’t tried padlet before but I used an app with similar functions in class and I found some problems.
Firstly, my students tend to think longer when they need to write something instead of speaking them out, so the written form sometimes drags the teaching and learning process.
Secondly, the first several posts can easily lead the discussion and the rest of my students just follow the trend. Some of my students just wait for others’ answers and copy and paste, and some even just typed +1 ( which means they agree on what others wrote).