allowed students to attach a preset (though variable) set of terms to specific selections of text. It touts itself as a critical reading tool but in fact delimits the variability of a reader’s response to a text, not to mention a teacher’s approach to textual analysis.
Allow me to push back a bit here. While the "canned responses" could, in some environments, build fences around student creativity and expression, it does not have to. From my limited play in the Ponder sandbox, I noticed that students could click on the canned responses OR offer their own annotation just like with Hypothes.is (though I am not sure if the annotation is limited to text). Also, I perceive the canned responses as allowing for scaffolding for younger readers and second language learners.